The ? decay of excited states in the waiting-point nucleus Cd82130 has been observed for the first time. An 8+ two-quasiparticle isomer has been populated both in the fragmentation of a Xe136 beam as well as in projectile fission of U238, making Cd130 the most neutron-rich N=82 isotone for which information about excited states is available. The results, interpreted using ...

The ?+/EC decays of 183Hg and 183Au have been studied on-line with mass-separated sources from the ISOCELE facility. A conversion-electron measurement was performed by means of a 180� spectrograph and abnormally converted transitions were found. Level schemes of 183Au and 183Pt have been established. The isomeric state of 183Pt has ...

The individual formation cross sections and recoil ranges for the isomeric pairs Tc/sup 96/, Tc/sup 95/, and Tc/sup 94/ as produced in the Nb/sup 93/( alpha ,xn) reactions were measured as a function of alpha -particle energy. The resultant excitation functions, isomeric ratio curves, and recoil range curves show many fluctuations with energy. ...

Experimental data on fission isomeric states of actinide nuclei (half lives, energies, quantum numbers, decay branches and spectroscopic properties) are discussed. Some results are explained in the framework of nuclear shape isomerism hypothesis being the...

... and international politics, and other areas researched by Joint ... Report Date : APR 1950. ... HALF LIFE, DECAY SCHEMES, NUCLEAR STRUCTURE. ...

The ?-decay half-lives of nuclei in the ground states and isomeric states have been calculated within the WKB approximation and Royer's formulas. The barrier in the quasimolecular shape path is determined within a generalized liquid drop model (GLDM), in which the centrifugal potential energy has been introduced to study the unfavored ...

The {gamma} decay of excited states in the waiting-point nucleus {sup 130}Cd{sub 82} has been observed for the first time. An 8{sup +} two-quasiparticle isomer has been populated both in the fragmentation of a {sup 136}Xe beam as well as in projectile fission of {sup 238}U, making {sup 130}Cd the most neutron-rich N=82 isotone for which information about excited states is ...

Relativistic energy projectile fragmentation of 208Pb has been used to produce a range of exotic nuclei. The nuclei of interest were studied by detecting delayed gamma rays following the decay of isomeric states. Experimental information on the excited states of the neutron-rich N=126 nucleus, 204Pt, following internal decay of two ...

Alpha-Crystallin, which forms a huge multimeric complex that is essential for maintaining eye lens transparency, is one of the major proteins in the lens. The protein, which exists as isoforms alphaA and alphaB, functions as a molecular chaperone to restore the original conformations of distorted constituent proteins in the lens. This function is important to maintain the transparency of the lens, ...

?-ray decays depopulating isomeric states have been observed in a number of very neutron deficient nuclei around A~80 following the projectile fragmentation of a 92Mo primary beam. Previously unobserved decays have been identified in the N=Z+2 nuclei 8039Y and 8441Nb and the N=Z nucleus, 8643Tc, making the latter the heaviest N=Z ...

... not a good enough fit. Either a triexponential decay or a Williams-Watts function could ... Phys. Lett., 1993, 63, 2038. 31. Scheuermann, H.; Tsukruk. ...

This paper reports an investigation of the external heavy atom effect in some stilbene-like olefins using cis-trans isomerization as a probe. (Author)

The upgraded LISOL ?-decay detection setup, which was used for the measurement of the mass A = 67 Fe Co Ni decay chain, is presented. A new decay correlation technique has been developed in order to characterize an isomeric 492 keV transition, observed in this decay chain. Correlating single ? ...

Heterotaxy is defined as an abnormality where the internal thoraco-abdominal organs demonstrate abnormal arrangement across the left-right axis of the body. This broad term includes patients with a wide variety of very complex cardiac lesions. Patients with heterotaxy can be stratified into the subsets of asplenia syndrome and polysplenia syndrome, or the ...

Heterotaxy is defined as an abnormality where the internal thoraco-abdominal organs demonstrate abnormal arrangement across the left-right axis of the body. This broad term includes patients with a wide variety of very complex cardiac lesions. Patients with heterotaxy can be stratified into the subsets of asplenia syndrome and polysplenia syndrome, or the ...

Right atrial isomerism or left atrial isomerism is frequently diagnosed as situs ambiguous without further discrimination of the specific morbid anatomy. Thirty six cases of right atrial isomerism and seven cases of left atrial isomerism were collected from the records and pathological museum at the National Taiwan ...

The mechanism which leads to accelerated disintegration of isomeric nuclei in high-intensity laser beam is considered. The critical intensities of laser beam for some nuclei which have the intermediate level at short distance from isomeric level, and low-...

Photoneutron cross sections for the ground and isomeric state formation of K/sup 39/ were measured. The experimental branching ratio was compared with statistical theory. It was found that sigma = 2 for the distribution parameter of the density level formula fits the experimental results. A tentative to observation of gamma decay of the ...

The beta -decay and isomeric properties of 54Sc, 50K and 53Ca are presented, and their implications with respect to the goodness of the N=32 sub-shell closure discussed.

Decays of neutron-rich Asim 190 nuclei have been studied following projectile fragmentation of a 208Pb beam on a 9Be target at the GSI Fragment Separator. Gamma-ray decays from previously reported isomeric states in 188Ta, 190W and 192,193Re were used as internal calibrations for the particle identification analysis, together with the ...

The conditions of known experiments on the trigger acceleration of the radiative decay of isomeric nuclear states are compared. It is shown that in the case of quasi-monochromatic inducing sources, the use of Moessbauer targets can increase the efficiency of the process by a few orders of magnitude. It is pointed out that the asymptotic behaviour of the ...

The excitation of nuclei in a high-temperature femtosecond laser plasma was observed for the first time; the gamma photons resulting from the decay of the isomeric 9/2{sup -} (6.238 keV) {sup 181}Ta level were detected. (letters to the editor)

The conditions of known experiments on the trigger acceleration of the radiative decay of isomeric nuclear states are compared. It is shown that in the case of quasi-monochromatic inducing sources, the use of M�ssbauer targets can increase the efficiency of the process by a few orders of magnitude. It is pointed out that the asymptotic behaviour of the ...

The decay of a T1/2 = 19(3) ?s isomeric state from 125Cd has been observed using ?-ray spectroscopy at the Lohengrin mass spectrometer of the Institut Laue-Langevin, Grenoble. Two coincident ? rays were observed to be emitted from the decay of this isomeric state, contradicting recently published data on this ...

The value of an isomeric ratio (IR) in N=81 isotones (137Ba, 139Ce, 141Nd, and 143Sm) is studied by means of the (?,n) reaction. This quantity measures a probability to populate the isomeric state in respect to the ground state population. In (?,n) reactions, the giant dipole resonance (GDR) is excited and after its decay by a neutron ...

Nuclear structure and decay of isomeric states in 253No were investigated. The isotope was produced by the reaction 48Ca + 207Pb . The excitation energy of the known single-particle isomeric state ( 5/2+[622] was measured by delayed coincidences between ?-rays and implanted evaporation residues and was placed into the level scheme. In ...

By irradiation of Ta and Hf with 12C and 14N ions, two new activities with half-lives of 4.7+/-0.1 min and 142+/-5 ms have been found. From measurements of excitation functions and from exact determination of the X-ray energy by means of a germanium detector, we found, that the activities belong to isomeric states in 189Au and probably in 187Au. The ...

The decay of 4.4 hr Ru/sup 105/ was studied by means of scintillation techniques and with a double focusirg spectrometer. Light gamma rays were observed in addition to the isomeric transition from the 30 sec Rh/sup 105/ daughter. This last one was shown to be of E3 character. A decay scheme is proposed which shows ...

Gamma rays populating the ?-decaying isomeric state in Ir169 have been observed for the first time. The experiment employed the recoil-decay tagging method using the JUROGAM ?-ray spectrometer, the RITU gas-filled recoil separator and the GREAT spectrometer located at the RITU focal plane. The ?-ray cascade feeding the ...

Isomer states of Ge/sup 71/, Y/sup 88/, Nb/sup 90/, and Pm/sup 141/ nuclei w ere obtained in nuclear reactions with targets irradiated with approximates 20-Mev protons. Energy spectra of the isomeric gamma decay and of internal conversion electrons were measured. The total internal conversion coefficient was determined for all investigated ...

A model of nuclear level decay in a plasma environment is described. Nuclear excitation and decay by photon processes, nuclear excitation by electron capture, and decay by internal conversion are taken into account. The electrons in the plasma are described by a relativistic average atom model for the bound electrons and by a ...

Looking for a possible cosmic-ray chronometer, we have studied the decay modes of 102Rhm,g. Its ground state has a half-life of 207 days, and decays to 102Ru and 102Pd via ?++? (80%) and ?- (20%) respectively. The meta-stable state has a 2.9-year half-life, and decays to 102Ru and 102Rhg via V decay (~100%) and a ...

A series of 1042 reports of necropsies on children dying at Children's Hospital of Pittsburgh was reviewed. In each case, note was taken of the status of the spleen, the lobation of the lungs, the arrangement of the bronchi, the morphology of the atrial appendages, and the presence of any congenital malformations of the heart and great vessels and of any malformations of the abdominal organs. ...

It is shown that the main phase of great magnetic storms is composed of two parts, most clearly characterized by their decay rate: one decays much more rapidly than the other. It is suggested that extraordinarily intense storms are largely a result of an abnormal growth of the rapidly decaying part. Because ...

The 70 Ni nucleus has been produced at the LISOL facility and its ? decay to 70 Cu has been observed. In parallel, the 70 Cu nucleus has been produced at the ISOLDE facility. A new third ? -decaying isomeric state in 70 Cu has been identified, partly with the aid of the in-source laser spectroscopy method. Its measured ...

Neutron-deficient uranium isotopes were studied via ? spectroscopic methods. A low-lying ?-decaying isomeric state was found in 218U. The new isomeric state was assigned spin and parity I?=8+. The isomer decays by ? emission with an energy E = 10678(17)keV and with a half-life T1/2 = (0.56+0.26-0.14)ms. The known ...

The two short-lived isomeric states in112In have been reinvestigated by means of the112Cd( d, 2 n) and109Ag ( ?, n) reactions. Measurements of delayed X- and ?-ray, lifetime and TDPAD spectra have been performed. A 6.32(3) keV ?-ray has been identified in the isomeric decay and an M1 multipolarity has been assigned to it on the basis ...

The Coulomb and proximity potential model for deformed nuclei (CPPMDN) is used to study the favored and unfavored ? decay of nuclei in the range 67 ? Z ? 91 from both the ground state (g.s.) and isomeric state (i.s.). The computed half-lives are in good agreement with experimental data. The standard deviation of half-life is found to be 0.44. ...

Relativistic fragmentation of 208Pb has been used to produce excited states in neutron-rich nuclei with Napprox 126. Spectroscopic information for a range of nuclei has been obtained through observing delayed gamma -ray emissions from isomeric states. Preliminary results for 203,204Pt nuclei are presented. For the first time, excited states have been observed in 203Pt and ...

The decay scheme of Tl/sup 210/ was investigated. Preparation of sourccs, decay energy, beta spectra, and gamma spectra are dcscribed. A search was made for alpha decay of Tlii0 for a long-lived isomeric state in Pb/sup 210/, and for neutron emission from Tl//sup 210/. Coincidence measurements are ...

The decay of 8 min and 13 min 102Ag has been investigated using isotopically separated samples produced by the ISOLDE facility. Partial decay schemes for the two isomers of 102Ag are proposed. The percentage of isomeric transition in this nuclide has been determined to be (49+/-5)%.

Data for electron conversion decay of an isomeric state of 133Xe are reviewed and updated. A value ?=11.1+/-0.3 for the conversion coefficient is obtained, yielding (8.2+/-0.2)% gamma decay branching. The new result is in concordance with a value deduced from analysis of gamma and X-ray spectra of 133mXe.

Decays of the ($nu$h$sub 11$/$sub 2$)$sup -1$ isomeric states, /sup 141 m/Nd, /sup 143 m/Sm, and /sup 145 m/Gd, and their direct $beta$$sup +$/epsilon decay to the $pi$h$sub 11$/$sub 2$ states in their respective daughters are studied. (auth)

One important goal of the ILIMA project at FAIR is the study of masses and decay properties of relativistic isomeric beams stored and cooled in the planned storage-ring complex. A new scheme is described, where a storage-cooler ring is used for high-resolution mass separation. Experimental results on the separation of the isobaric pair 140Pr-140Ce are ...

Measurements on the decay of Rh/sup 102/ indicate transitions from an isomeric state (T/sub 1/2 = 1057 days) to the 2220 and 1870 kev levels in Ru/sup 102/. For the spins of the states of Rh/sup 102/, 3 or 4 (T/sub 1/2,= 1057 days) and 0 or 1 (T, =205 days) are proposed. (auth)

In a series of more than 3500 pregnancies referred for fetal echocardiography, 29 cases of atrioventricular septal defect were detected in the fetus. There was a chromosomal anomaly in 14 of these cases, left atrial isomerism in 12, and right atrial isomerism in two. Complete heart block was found in 11 of the cases with left atrial ...

The nonadiabatic quasiparticle model for triaxial shapes is used to perform calculations for decay of 141Ho, the only known odd-Z even-N deformed nucleus for which fine structure in proton emission from both ground and isomeric states was observed. All experimental data corresponding to this unique case namely, the rotational spectra of parent and daughter ...

Kinemetic shifts have been measured in the beta -delayed alpha -decay of exp 20 Na in order to deduce beta - nu angular correlations. Analysis of the data is in progress. In a significant advance in techniques to measure quadrupole moments of isomeric sta...

A table, with physical characteristics of radioisotopes used in biological sciences is presented. It includes data of half-life, decay, electron capture, isomeric transitron, etc. (Atomindex citation 09:414050)

The 24-sec isomeric state Nb(90m) is found to decay more slowly in superconducting metal than in the normal metal. Superconductivity was quenched with a magnetic field, and all measurements were taken at 4.2 degrees K. The result was lambda (superconducti...

An activity of 4.8-msec half-life which is assigned to Pb/sup 205m/ has been observed in the electron capture decay of 14.5-day Bi/sup 205/. This isomeric level decays with the emission of 987.8, 703.3, and 284.4-kev gamma rays with relative transition intensities of 100, 10, and 10. No other gamma rays of energy greater than ...

A notable change in the photochromic characteristics was observed when the benzene solution of spirobenzopyran was put in nanoholes of anodic alumina. The absorption peak that appeared in the ultraviolet irradiation process shifted to a shorter wavelength, and the decay time of the decoloration process became?200 times longer than that of the original solution. After a ...

An M3 transition in a doubly odd nucleus of 156Pm was identified by internal conversion electron measurement through the ?-decay of 156Nd which was separated from the fission products of 235U using the on-line mass separator KUR-ISOL. The isomeric state at 150.3keV de-excites to the ground state with the M3 transition, and the spin-parity is considered to ...

Radioactive decay from the ground state or isomeric states has been investigated for a series of nuclei in the region of Z = 100 106 by means of ? ?�or evaporation residue-(?, conversion electron)�measurements in prompt and delayed coincidence. Systematic trends in single-particle level energies in N = 145 151 odd-even isotones could be extended up to ...

Heavy neutron-rich nuclei were populated via relativistic energy fragmentation of a E/A = 1 GeV 208Pb beam. The nuclei of interest were selected and identified by a fragment separator and then implanted in a passive plastic stopper. Delayed ? rays following internal isomeric decays were detected by the RISING array. Experimental information was obtained on ...

The preliminary results from the RISING Stopped Beam Isomer Campaign are presented, with specific focus on results of the initial experiment to investigate isomeric decays along the N=Z line around A~80-90 following the projectile fragmentation of a 107Ag primary beam at an energy of 750 MeV per nucleon. A description of the technical aspects behind the ...

An E4 cross-over transition from the second excited 4+ state to the ground state in the isomeric decay of Pb/jsup 204/ was investigated, using a scintillation spectrometer with an absorber technique. The experimertal transition probability of the 1.274-Mev E4 gamma ray was found to be approximately 1.3 x 10/sup 2 sec/sup -1/ or less. A hindrance ...

The isomeric and ?-decay properties of neutron-rich Sc53-57 and Ca53,54 nuclei near neutron number N=32 are reported, and the low-energy level schemes of Sc53,54,56 and Ti53-57 are presented. The low-energy level structures of the 21Sc isotopes are discussed in terms of the coupling of the valence 1f7/2 proton to states in the corresponding 20Ca cores. ...

On the basis of measurements of the gamma spectrum, internal conversion electron spectrum, and gamma - gamma coincidences of the 0/sup +/ (ground) and 7/sup -/ (isomeric) states of /sup 130/Sn its decay scheme was formulated and conclusions were drawn on the energy levels of /sup 130/Sb. (JSR)

Samarium oxide enriched in Sm/sup 144/ has been bombarded by 14-Mev neutrons to produce the isomeric state of Sm/sup 143/. The isomeric state was found to decay with a half-life of 65 plus or minus 3 sec by the emission of a 0.75 plus or minus 0.01-Mev gamma ray. Measured relative to a Cu/sup 63/ (n,2n)Cu cross section of ...

We performed at ISOLDE the spectroscopy of the decay of the 8? isomer in 136Cs by ? and conversion-electron detection. For the first time the excitation energy of the isomer and the multipolarity of its decay have been measured. The half-life of the isomeric state was remeasured to T1/2=17.5(2) s. This isomer ...

The decay191Hg?191Au was investigated by measuring ?-ray spectra, conversion electron spectra, and coincidence spectra, as well as lifetimes in the second region. The parent isotope191Hg was produced by the reaction197Au ( d, 8 n) with E d =80 MeV. About 80 ?-transitions of this decay were observed. Multipolarities of the more intense transitions were ...

Isomeric Cl/sup 38/ was produced by neutron activation of chlorine samples in a pneumatic irradiation facility. The decay of the Cl/sup 38/ isomer was investigated by various scintillation spectrometer techniques. The half-life and the internal conversion coefficient alpha of the 0.66-Mev isomeric transition were found to ...

>The systematic search for new short-lived isomeric states was continued by irradiation of an additional 32 selected elements with 26 Mev bremsstrahlung. Isomeric transitions were detected using a conventional scintillation spectrometer. Irradiation of antimony led to the production of a new (530 plus or minus 50) mu sec ...

The atrial morphology and venous connections were assessed "blind" in 51 necropsy specimens from patients with visceral heterotaxy. This was compared with bronchial morphology as established by dissection. Six specimens were found to have both atria and bronchi in situs solitus or inversus, and were rejected. In the remainder, atrial isomerism was diagnosed, though this ...

Using the reaction 128Te(12C, 5n)135Ce, the 20 s isomeric state was produced and studied with the Ge(Li) detector and the magnetic spectrometer on the beam line. A level scheme was constructed for 135mCe. In the reactions 119,122Sn(20,22Ne, xn) and 126Te(18O, xn), leading to 137Nd, a new isomeric state with t1/2 = 1.6 +/- 0.15 s was found. In the ...

Decay studies on a number of short-lived odd nuclei in the N=50 region are described. The 59.6- s 93Ru ground state decay was studied in detail for the first time; in these experiments the 10.8- s activity93 m Ru was discovered. The91Tc activities were also observed for the first time. The ground state and an isomeric state of this ...

The modified two-potential approach (MTPA) is employed to study the exotic ?-decay near the closed shells Z=82 and N=82, 126 within a deformed version of the cluster model. We perform systematic calculations on favored ?-decay half-lives from both the ground states (g.s.) and the isomeric states (i.s.) by using the microscopic ...

An experiment has been performed to detect the {alpha} emission mode in {sup 178}Hf{sup m2} isomer decay and a partial half-life of (2.5{+-}0.5)x10{sup 10}y was measured. It was concluded that {alpha} decay is strongly retarded by the centrifugal barrier arising due to the high spin of this isomeric state. Additional analysis shows, ...

The decays of Ta/sup 185/ and W/sup 185//sup m/ were investigated w ith a scintillation spectrometer with a coincidence circuit. The sources were prepared from photodisintegration of metallic tungsten. Gamma rays observed were essentially the same as previous results by Poe except for a few new lines. A decay scheme is proposed for both ...

Recoil-isomer tagging with the Fe54+Mo92 reaction was used to establish a 10(2)-?s isomeric state in Eu139. Prompt versus delayed ?-ray coincidence data have revealed the presence of a prompt rotational band built upon the isomer. The alignment properties of the states in this band show that the isomer is based upon a proton g7/2 configuration. The decay ...

Sources of 199Pom and 199Pog have been produced and mass separated on line. Multiscaled spectra of ? rays, x rays, and conversion electrons, and ?-? and ?-x-ray coincidences were measured. The M4 isomeric transition of the (13/2)+ state of 199Po, with a half-life of 4.17 min, was observed for the first time, permitting the placement of the (13/2)+ and (5/2)- levels above the ...

The very neutron-deficient 91,92,93Rh and 90,91Ru nuclei were produced in 58Ni(36,40Ar, xn yp) fusion-evaporation reactions. Reaction products leaving the target were stopped in a gas cell and selectively laser ionised before mass separation using the LISOL setup. Data were collected in singles and coincidence formats to investigate ? -delayed and isomeric ? ...

The decay of 185m + gHg has been studied on-line with mass-separated sources from the ISOCELE facility. Precise conversion-electron measurements were performed with a 180� spectrograph. The 13/2+ isomeric state of 185Hg (T1/2 = 28 +/- 5 s) was located with respect to the 1/2- ground state (T1/2 = 55 +/- 10 s). A level scheme of 185Au has been ...

Ultraviolet spectroscopy of 233U and 232U, in the form of uranium oxide dissolved in 3M nitric acid, has revealed a number of spectral lines with widths of less than 6 nm from the 233U source but no detectable narrow lines from the 232U source. These lines could possibly be attributed to the decay of the 229Th isomeric state at an energy of around 4.0 eV.

Progress is reported in the study of O exp + states in even-even Ce nuclides, cluster states in N = 85 nuclides, isomerism in exp 148 Pr, and levels of exp 148 La populated in the decay of 0.64-sec. exp 148 Ba. Facility development is briefly described, a...

Proton radioactivity of 117La, was measured with much improved statistics, but no evidence is observed for the isomeric proton decay. Prompt ?-rays were identified in proton emitters 117La, 151Lu, and beta-delayed proton precursor 117Ba using recoil decay tagging method by coupling the Gammasphere Ge array at the target position with ...

A K-isomeric state in /sup 182/Os with spin I = (20 +- 2)h and half-life equal to 100 ns is found to decay in flagrant violation of the usual K-selection rules. The observations: still preliminary: are on the other hand readily understood if it is assumed that the yrast configuration of /sup 182/Os becomes triaxial above the backbend, and that the ...

A spin 2 state has been observed in 102Ag by atomic beam magnetic resonance techniques. Energies and relative intensities of a number of gamma rays following the decay of 102Ag have been determined with a Ge(Li) detector. A search for conversion electrons from the isomeric transition in 102Ag with a Si(Li) detector was not successful.

Spectra of gamma-rays, internal conversion electrons and gamma-gamma-coincidences in the (beta)-decay of the isomeric (1/2(sup +), 1.6 h) Tb-147 state are studied using semiconductor detectors. More than one hundred of new gamma-transitions are observed. ...

The level structure of exp 24 Mg and decay properties of the 129 ms sup(24m)Al and 2.07 s exp 24 Al have been investigated by means of gamma -ray and particle spectroscopy. The energy and intensity of the isomeric transition were measured to be 425.8+-0.1...

A sensitive study of the decay of the deformation-aligned {ital K}=14, 4-{mu}s isomer in {sup 174}Hf has revealed a multitude of the {ital K}-forbidden branches to the ground-state rotational band and other low-{ital K} bands, in competition with the known decays to high-{ital K} bands. The isomeric transitions have consistently low ...

We apply the generator coordinate method in a fully microscopic calculation of the {ital E}2 decay lifetime of the shape isomeric states of {sup 236}U, {sup 238}U, and {sup 240}Pu. The basis states have been generated by constrained Hartree-Fock Bardeen-Cooper-Schrieffer calculations with the SkM{sup {asterisk}} force. Triaxial quadrupole deformations have ...

The results of two experimental studies are reported which contribute to understanding of the temperature during the s-process as well as to possible thermal effects on beta decay lifetimes. In a study of the stellar decay rate and Se-79 branching, it was found that the determination of the temperature characteristic for the weak s-process component ...

Decay studies on 151Ce have been performed using the on-line isotope separator connected to the Kyoto University Reactor. In addition to conventional ? and conversion electron spectroscopy, ?-gated measurements were carried out on mass-separated 151Ce to identify an isomeric transition. From the analysis of the obtained data, the half-life of the isotope ...

Samples of In/sup 117-117m/ were produced by the Sb/sup 121/( gamma , alpha ) reaction and studied by gamma-ray spectroscopy techniques. The analysis of the decay curves for the various photopeaks gives a 1.9 plus or minus 0.1 hr half life for In/sup 117m/ which agrees with the previous value and 43 plus or minus 4 min for In/sup 117/ Which is shorter than the ...

The isomeric state in Au/sup 196/ decays to the ground state with an initial M4 transition of energy 175.5 approximately 0.5 kev, followed by 145.2 approximately 0.5 kev and 188.8 approximately 0.5 kev transitions in cascade; a transition of 85.0 approximately 0.5 kev is probably also in cascade with these transitions. There is evidence of ...

The decays of seniority isomers in the {ital N}=82 nuclei {sup 150}Er and {sup 152}Yb and in their respective {ital N}=81 isotopes {sup 149}Er and {sup 151}Yb were studied following mass separation by the Argonne Fragment Mass Analyzer. Conversion electrons were detected with Si {ital p}-{ital i}-{ital n} diodes operated at room temperature. The low-energy ...

The decay of the 8+, 218.4keV isomeric state of 86Y has been re-investigated. It was observed that this state decays with a weak ?+ branch to a state at 2955.5 keV in 86Sr as well as ?-decaying to states in 86Y. The relative ?+ decay strength was measured to be (0.69 +/-0.04) %, corresponding ...

Isomeric states in the semimagic 128-130Sn isotopes were populated in the fragmentation of a Xe136 beam on a Be9 target at an energy of 750 A�MeV. The decay of an isomeric state in Sn128 at an excitation energy of 4098 keV has been observed. Its half live has been determined to be T1/2=220(30) ns from the time distributions of the ...

An isomeric one-quasineutron state, likely based on the [725]11/2- Nilsson level, was identified in Sg261 by its decay via internal conversion electrons. The state has an excitation energy of ?200 keV and a half-life of 9.0-1.5+2.0 ?s. Sg261 has the highest Z and A of any nucleus in which the electromagnetic decay of an ...

The thermal properties of rhodopsin, which set the threshold of our vision, have long been investigated, but the chemical kinetics of the thermal decay of rhodopsin have not been revealed in detail. To understand thermal decay quantitatively, we propose a kinetic model consisting of two pathways: (1) thermal isomerization of 11-cis ...

... report contains an investigation of the abnormal return pressure decay characteristics exhibited by Missile 26E sustainer/vernier hydraulic system. ...

The decay of 108mAg (T1/2 > 5y) has been studied with large-volume (60 cm3) Ge(Li) detectors to search for weak transitions in this decay. The 108mAg sources were prepared from neutron capture on natural silver in the early 1950's and 1960's. In addition to the well-known 723.0, 614.4, 434.0 keV (100%) triple cascade in 108Pd, only the (0.15+/-0.01 %) ...

Neutron-deficient uranium isotopes 218U and 219U were studied via ? spectroscopic methods. The isotopes were produced in fusion evaporation reaction 182W(40Ar,xn)222-xnU. The ground state decay properties of 218U were measured with improved statistics and in addition a low-lying ? decaying isomeric state was discovered. The isomer in ...

Two nuclear isomeric states are discovered in Po/sup 207/ by the reaction Bi/sup 209/(p,3n)Po/sup 207m/, and information is found on an isomer in Po/sup 205/ produced by the reaction Bi/sup 209/(p,5n)Po/sup205m/. A 47- mu sec activity is found in Po/sup 207/, which is assigned as the decay of a 13/2+ level by 310-kev M2 radiation to a 9/2- level, ...

The isomeric decay of the T 1/2=94 us isomeric state in201Hg was studied in beam via the reaction198Pt( ?, n). Gamma-ray and conversion-electron spectra were recorded. From the conversion coefficients, the multipolarities of the two depopulating transitions were determined to be M 2 + 10% E 3 and E 2, respectively. These assignments ...

The isomeric and {\\beta} decays of the N = Z +2 nucleus 96Ag were investigated at NSCL. A cascade of {\\gamma}-ray transitions originating from the de-excitation of a {\\mu}s isomer was observed for the first time and was found in coincidence with two previously-known transitions with energies of 470 and 667 keV. The isomeric ...

Neutron deficient isotopes of francium (Z=87, N�121-123) as excited nuclei were produced in the fusion-evaporation reaction: 197Au(16O, xn) 213 ? xFr at 100 MeV. The ? rays from the residues were observed through the high sensitivity Germanium Clover detector array INGA. The decay of the high spin states and the isomeric states of the doubly-odd 208Fr ...

Photochemical isomerization provides a practical testing ground for activated barrier crossing theories. Stilbene is a prototype, because (1) reaction may be initiated by a short optical pulse and the decay of the excited trans isomer followed optically, and (2) the isomerization rate is slow compared to vibrational or solvent ...

The existence of two decaying isomers in {sup 184}Au was confirmed through direct observation of the variation of decay rates with time. The ordering of the low- and high-spin isomers was verified by the decay studies. The isomers are identified as a low-spin (probably 2{sup +}) state at an energy of 69 keV with a half-life of ...

Intense peaks, superposed on a structureless spectrum, were observed in 151Yb ?-delayed proton decay. It is shown that the peak and statistical protons follow the decay of the s1/2 groundand h11/2 isomeric states in 151Yb, respectively. It is concluded that the peaks, also seen in 147Dy and 149Er decays, are due to ...

The neutron-rich isotope179Yb was produced by using the multinucleon transfer reactions 11.6 MeV/u136Xe+Re and 11.4 MeV/u197Au+W. The isotope identification was achieved by combining mass-separation and decay spectroscopy. A decay scheme was constructed including a new isomeric state in179Lu with a half-life of 3.1(9) ms.

Time-correlated ? decays from individually separated 54Ni nuclei have been measured in an experiment within the stopped-beam campaign of the RISING project at GSI. An isomeric 10+ state was identified and its lifetime measured to 218(4) ns. The isomer decays by E2 and E4 ?-ray transitions to the 8+ and 6+ states, respectively, and by ...

Measurements were made to detect and characterize the 97-kev level in the gamma decay of Rh/sup 104/. The 31-kev transition leading to the 97-kev level represented a phase of the isomer. Both states of the Rh/sup 104/ nucleus are probably different only in spin orientation of the unpaired nucleon groups. In order to completely understand the ...

Exotic neutron-rich fission products obtained from IGISOL on-line mass separator for mass chain A=113 have been investigated by {gamma}{gamma} coincidence and spectrum-multiscaling measurements. Gamma transitions following {beta} decay of Tc to Ru have been identified and a 0.5 s isomeric state in Ru has been found. Decay schemes of Ru ...

This paper is a continuation of our two previous publications under the same title and is devoted to the features of a chain reaction proceeding upon nonequilibrium radiation of a plasma in the presence of nonradiative decay channels of the trigger level and other processes. The required accuracy of the resonance of nuclei with a line spectrum of ions in the plasma and the ...

The scenario of the experiment on the amplification of gamma rays upon stimulated transitions from metastable states of isomeric nuclei in a Bose-Einstein condensate (BEC) is presented. The experiment involves the successive transport of atoms along the so-called quantum conveyer. It is shown that if the excess broadening of the gamma-ray emission line is eliminated, the total ...

We have used complete correlated momentum mapping of the photoelectron and heavy ion products from the dissociation of the di-cation of acetylene, induced by photoionizing the carbon K shell of one of the atoms, to map out the angular correlation between the electron and the axis of the target molecule. The (quasi-) symmetric decay is found to proceed through both acetylene ...

A long-lived isomer of Ag108 has been detected in old Ag110m samples. The isomer decays with a half-life ⋝ 5 years. Gamma- and beta-ray spectrometer data show that 90% of the disintegrations proceed by electron capture followed by a cascade of three gamma rays of 616-, 722-, and 434-kev energy, while 10% go by isomeric transition to Ag108. New ...

The decays of the isomeric 9/2 exp + states, which have been produced by (d,p gamma ) and ( exp 3 He,xn gamma ) reactions, have been investigated in three N=89 nuclei. The half-lives have been determined to be 5.1+-0.3 ns in exp 149 Nd and 3.5+-0.4 mu s i...

A new long-lived isomeric state in the near proton dripline nucleus 125Ce has been identified with Schottky mass spectrometry at GSI. The excitation energy E * = 103(12)keV and the decay time of 193(1)s have been obtained from a single stored fully ionized 125m Ce58+ ion. The data implies an E3 transition and a 1/2+ assignment for the spin of the isomer.

The detection of conversion electrons of short-lived isotopes at ISOCELE has been extended to very low-energy: a special tape-transport system has been built which allows the slowing down of the incoming radioactive ions and the acceleration of the electrons detected on photographic film in a flat magnetic spectrograph. Results have been acquired for the decay of mercury with ...

The detection of conversion electrons of short-lived isotopes at ISOCELE has been extended to very low-energy: a special tape-transport system has been built which allows the slowing down of the incoming radioactive ions and the acceleration of the electrons detected on photographic film in a flat magnetic spectrograph. Results have been acquired for the decay of mercury with ...

The new isotope /sup 184/Tl has been identified with T/sub 1///sub 2/=11 +- 1 sec and the levels in /sup 184/Hg investigated from its decay. The 0/sup +/ band head of a deformed band was found to drop to 375 keV in agreement with theoretical predictions. The mean life of the 375-keV 0/sup +/ level was measured to be 0.9 +- 0.3 nsec which is a factor of 10 faster than ...

The new isotope 184Tl has been identified with T12=11+/-1 sec and the levels in 184Hg investigated from its decay. The 0+ band head of a deformed band was found to drop to 375 keV in agreement with theoretical predictions. The mean life of the 375-keV 0+ level was measured to be 0.9 +/- 0.3 nsec which is a factor of 10 faster than theoretically predicted for a ...

Ultrafast isomerization of acetylene cations ([HC=CH](+)) in the low-lying excited A(2)?(g)(+) state, populated by the absorption of extreme ultraviolet (XUV) photons (38 eV), has been observed at the Free Electron Laser in Hamburg, (FLASH). Recording coincident fragments C(+) + CH2(+) as a function of time between XUV-pump and -probe pulses, generated by a split-mirror ...

Ultrafast isomerization of acetylene cations ([HC=CH]+) in the low-lying excited A?g+2 state, populated by the absorption of extreme ultraviolet (XUV) photons (38 eV), has been observed at the Free Electron Laser in Hamburg, (FLASH). Recording coincident fragments C++CH2+ as a function of time between XUV-pump and -probe pulses, generated by a split-mirror device, we find an ...

Isomeric states in $sup 194$Au with half-lives of 600plus-or-minus8 and 420plus-or-minus10 ms have been studied by observing the delayed $gamma$ rays following the $sup 194$Pt(p,n) and $sup 194$Pt(d,2n) reactions. $gamma$-ray singles and $gamma$-$gamma$ coincidence measurements were made and isomer cross section ratios were calculated. It is argued that the isomer at ...

A systematic study of the population probabilities of nanosecond and microsecond isomers produced following the projectile fragmentation of 238 U at 750 MeV/nucleon has been undertaken at the SIS/FRS facility at GSI. Approximately 15 isomeric states in neutron-deficient nuclei around A�190 were identified and the corresponding isomeric ratios ...

Isomeric states in some doubly even nuclei are investigated with the use of a pulsed beam technique. In 176Hf a level at 1562 has a half-life of 10.3 ?s and a level at 1335 keV has a half-life of 13.0 ?s. In 174Yb an isomeric state at 1520 keV with a half-life of 820 ?s is studied. In 176Yb, an isomeric level with a half-life of 12 s ...

BACKGROUND--The location of the sinus node is known to be at best abnormal, or at worst unknown, in patients with isomerism of the morphologically left atrial appendage. In contrast, the sinus node is known to be an excellent histological marker of the morphologically right appendage, being duplicated in those with right isomerism. The ...

The radioactive decay of iodine-118 ground and isomeric state and iodine-120 ground and isomeric state from irradiations of silver with carbon-12 ions, palladium with nitrogen-14 ions, and cadmium with boron-11 ions has been studied with a germanium lithium-drifted detector, a NaI crystal, an anthracene crystal, and several 400-channel ...

By the use of scintillation spectrometers and coincidence techniques, the decay of Nb/sup 94m/ was investigated. The Kshell conversion coefficient of the 41.5 kev isomeric transition was found to be 570 plus or minus 100 indicating a M3 transition. The maximum energy of the BETA decay to the 0.87 Mev level of Mo/sup 94/ ...

The ? decay of 188,192 Po has been reexamined in order to probe the 0+ states in the daughter nuclei 184,188 Pb that can be associated with coexisting spherical, oblate, and/or prolate configurations. Improved values were measured for the excitation energy and the feeding ? -decay intensity of the 0+2 state in 184,188 Pb and conflicting ...

Fission is a well-known mechanism to populate excited states in neutron-rich isotopes. Fission is also an effective tool for studying isomeric decays, as they are often well-populated and relatively easy to detect. Isomeric states with half-lives in the �5 -- 100 ?s range were examined using ^6Li-induced fission on ^232Th. A 45-MeV ...

The neutron-rich nuclei 109Nb and 109Zr have been populated using in-flight fission of a 238U beam at 345 MeV/nucleon at the RIBF facility. A T=150(30) ns isomer at 313 keV has been identified in 109Nb for the first time. The low-lying levels in 109Nb have been also populated following the ?-decay of 109Zr. Based on the difference in feeding pattern between the ...

A K?=8- strongly coupled rotational band, which is built upon a 23 ns isomeric state, has been established in 170Hf. The single-particle configuration of the band has been determined from the in-band to out-of-band branching ratios and associated \\|(gK-gR)\\|/Q0 values. The ?-ray decay of the K?=8- isomeric state proceeds through a ...

Isomeric states of 69Se were produced via the heavy-ion compound-nucleus process and from the positon decay of 69Br, the former producing a high-spin state and the latter preferentially populating a low-spin state. Ge(Li) detectors as well as scintillation counting showed that the high-spin state decays with T1/2 = 14.0 +/- 1.0 min to ...

The fragmentation of a 550MeV/u primary beam of 58Ni on a 9Be target has been used to measure time- and energy-correlated ? decays following the implantation of event-by-event discriminated secondary fragments into a 9Be stopper plate. A new isomeric ? decay with T 1/2 = 14( begin{smallmatrix}6 4) ns and E ? = 646.2(2) keV is observed ...

{sup 229}Th has an isomeric state of unusually low energy, whose adopted value is by now 3.5(10) eV. This value was determined indirectly, based on several very precise {gamma}-ray energies, between 25 and 217 keV, from the {alpha} decay of {sup 233}U. Two recent works suggest that the decay pattern of the transitions that link the ...

Recoil-isomer tagging at the Accelerator Laboratory of the University of Jyvaeskylae has been used to establish the isomeric nature of a known (7{sup -}) excited state in the doubly odd nucleus {sup 134}Pm. The isomeric state was determined to have a half-life of 20(1) {mu}s and was populated from the decay of a {pi}h{sub 11/2} x ...

A search was made for the proposed isomeric and fast transitions from the decay of 4.9 h In/sup 110/-- with spin 7 to In/sup 110/ with spin 2 via an intermediate state of spin 3 or 4. The energies of these two predicted transitions must be less than 33 kev. The electron spectrum was measured from 5- 40 kev in an iron-free, double-focusing ...

The 102Ag, 102mAg and 101Ag activities were studied using Li-Ge detectors as well as with scintillation counters. Gamma rays of energies 230, 511, 550, 720, 780 and 1270 keV in the decay of 102Ag are observed to have composite half-lives of 4 and 17 min. Three beta groups of energies 3.6, 3.3 and 2.88 MeV were observed to decay with a half-life of 4 min, ...

A detailed spectroscopic study of the neutron-deficient isotope {sup 181}Tl and the daughter of its {alpha} decay, {sup 177}Au, has been performed in the complete fusion reaction {sup 40}Ca+{sup 144}Sm{yields}{sup 184}Pb* at the velocity filter SHIP (GSI). The mass excess, excitation energy, and decay scheme of the isomeric 1.40(3) ms, ...

The isomeric and beta-decay properties of neutron-rich {sup 53-57}Sc and {sup 53,54}Ca nuclei near neutron number N=32 are reported, and the low-energy level schemes of {sup 53,54,56}Sc and {sup 53-57}Ti are presented. The low-energy level structures of the {sub 21}Sc isotopes are discussed in terms of the coupling of the valence 1f{sub 7/2} proton to ...

Gamma spectroscopy methods have been used to search for microsecond isomers among fragmentation products of 1 GeV/nucleon {sup 208}Pb beam. Decays of several known K-isomers in the rare earth region of A{approx}180 were observed, including the K=35/2 isomer in {sup 179}W. Several new isomeric decays in the very neutron rich systems, ...

Gamma spectroscopy methods have been used to search for microsecond isomers among fragmentation products of 1 GeV/nucleon {sup 208}Pb beam. Decays of several known K-isomers in the rare earth region of A {approx} 180 were observed, including the K = 35/2 isomer in {sup 179}W. Several new isomeric decays in the very neutron rich ...

The trans-cis photoisomerization of azobenzene-containing materials is key to a number of photomechanical applications, but the actual conversion mechanism in condensed phases is still largely unknown. Herein, we study the n, pi* isomerization in a vacuum and in various solvents via a modified molecular dynamics simulation adopting an ab initio torsion-inversion force field in ...

We present numerical evidence of fractional behavior in reactions for a prototype model of three-degree-of-freedom isomerization. The survival probability in the well exhibits two distinct ranges of time scales: one where it decreases with a power law, and the other where it decreases exponentially. Trajectories corresponding to power law decays exhibit ...

We present numerical evidence of fractional behavior in reactions for a prototype model of three-degree-of-freedom isomerization. The survival probability in the well exhibits two distinct ranges of time scales: one where it decreases with a power law, and the other where it decreases exponentially. Trajectories corresponding to power law decays exhibit ...

The decay of the ensuremath I^{?}=K^{?}=8- isomeric state at 2340keV in 132Ce has been investigated in the 120Sn(16O, 4n)132Ce reaction. The measurements were carried out in e - ? and ? - ? coincidence modes using an electron spectrometer coupled to the OSIRIS II gamma-ray array at the Heavy Ion Laboratory of the University of Warsaw. Experimentally ...

We have developed a Monte Carlo generator for simulating charmonium J/? and ?(2S) inclusive decay. In the model, charmonium decay via gluons is described by the QCD partonic theory, and the partonic hadronization is handled by the LUND model. Extended C- and G-parity conservation are assumed and abnormal suppression effects of ...

The region of nuclei near /sup 208/Pb provide a good proving ground for the nuclear shell model. One of the most interesting features of nuclei in this and other closed shell regions is the existence of high-spin, long-lived isomeric states. Such states allow for a detailed study of the nature of the nucleons composing the nucleus and the forces which bind these nucleons ...

Recent studies of the hot fusion reaction {sup 248}Cm({sup 26}Mg,xn){sup 274-x}Hs have provided new nuclear decay data on {sup 265,266}Sg and confirmed the existence of an isomeric state in {sup 261}Rf. The results reported in [J. Dvorak et al., Phys. Rev. Lett. 100, 132503 (2008)] suggest that all decay chains observed in previous ...

The table is ordered by mass number and subordered by atomic number. For each mass number there is an abbreviated mass-chain decay scheme, showing the adopted half-lives, spin-parity assignments, and decay energies (Q-values) for the isobars, and the decay relationships between them. Following the mass-chain decay ...

Recent studies of the hot fusion reaction Cm248(Mg26,xn)Hs274-x have provided new nuclear decay data on Sg265,266 and confirmed the existence of an isomeric state in Rf261. The results reported in [J. Dvorak , Phys. Rev. Lett. 100, 132503 (2008)] suggest that all decay chains observed in previous studies of the reaction ...

6732Ge35 has been studied via the reaction 64Zn(?,n?)67Ge. The mass excess was measured to be -62666 +/- 12 keV, and four low-lying excited states have been identified. Among these newly identified levels is an isomeric state at 18.2 keV having a measured total mean lifetime of 18.5 +/- 0.3 ?s and a measured K-shell internal conversion coefficient ?K=176+/-29. In addition, the ...

Excitation transfers between linear AlNC and AlCN via the A~ 1? (1 1A'', 2 1A')-X~ 1?+ transition were studied by a wave packet propagation method as applied to a simple system for an isomerization reaction. The photoabsorption and fluorescence spectra calculated in this work are in good agreement with Einstein's A and B coefficients reported in our previous paper [I. Tokue ...

Excitation transfers between linear AlNC and AlCN via the A? (1)? (1 (1)A", 2 (1)A')-X? (1)?(+) transition were studied by a wave packet propagation method as applied to a simple system for an isomerization reaction. The photoabsorption and fluorescence spectra calculated in this work are in good agreement with Einstein's A and B coefficients reported in our previous paper [I. ...

Decay properties of the new neutron-deficient nuclide {sup 192}At have been studied in the complete fusion reaction {sup 144}Sm({sup 51}V,3n){sup 192}At at the velocity filter SHIP. Two isomeric states with half-lives of 88(6) ms and 11.5(6) ms, respectively, and with complex {alpha}-decay schemes were identified in {sup 192}At. The ...

The energy of the hardest gamma ray emitted following ?- decay of the ground state of Pt197 (18 h) has been measured in a lithium-drifted germanium detector to be 268 keV. A 279-keV gamma ray was resolved which decayed in intensity with the 78-min half-life of the isomeric level of Pt197. The K-shell conversion coefficient of the ...

The ? decays from an isomeric 10+ state at 6457 keV in the nucleus 2854Ni26 have been identified using the GSI fragment separator in conjunction with the RISING Ge-detector array. The state is interpreted as the isobaric analog of the 6527-keV 10+ isomer in 2654Fe28. The results are discussed in terms of isospin-dependent shell-model calculations. Clear ...

A new high-spin isomeric state (t=2.8�0.1 ?s) in 160Re has been identified. This high-spin isomer is unique in that it only decays by ?-decay and not by proton or ?-particle emission as is the case in every other proton emitter between Z=64 and 80. Shell model calculations indicate how the convergence of the h and f neutron levels in ...

An investigation of the decay schemes of Tc95 and Tc97 has been made by using high-resolution conversion-electron spectrographs, gamma-ray scintillation detectors, and coincidence techniques. In addition to the 38.9-kev isomeric transition in Tc95, eight transitions of the following energies have been assigned to Mo95: 204.2, 583.9, 763, 767.9, 784, 788.0, ...

The decay of Sr/sup 89/ was re-investigated in an effort to find a approximately 10 d isomeric state previously reported. No appreci-able production of such an isomer hy means of neutron capture has been observed. In addition a 0.913 Mev gamma ray activity with a measured half life of 50.1 plus or minus 3.4 d, attributed by some investigators ...

Activation techniques have been used to measure the cross sections at 15.1 MeV neutron energy for the following reactions: 82Se(n, 2n)81m+gSe, 81Br(n, 2n)80m+gBr, and 45Sc(n, 2n) 44m+gSc. Isomeric cross-section ratios were evaluated by applying the method of least squares to the time behavior of ?-ray activity following the ground-state decay of each ...

A visible-pump/UV-probe transient absorption is used to characterize the ultrafast dynamics of bacteriorhodopsin with 80-fs time resolution. We identify three spectral components in the 265- to 310-nm region, related to the all-trans retinal, tryptophan (Trp)-86 and the isomerized photoproduct, allowing us to map the dynamics from reactants to products, along with the response ...

The decay properties of rp-process nuclei in the vicinity of {sup 100}Sn have been studied at the National Superconducting Cyclotron Laboratory (NSCL). The measured {beta}-decay half-life for {sup 100}Sn is 0.55{sub -0.31}{sup +0.70} s, in agreement with a previous measurement. In {sup 98}In, the {beta}-decay of the ground state plus ...

Detailed {alpha}-decay studies of the neutron-deficient isotope {sup 194}At have been performed in the complete fusion reaction {sup 56}Fe+{sup 141}Pr{yields}{sup 194}At+3n at the velocity filter SHIP. Two {alpha}-decaying isomeric states with half-lives of T{sub 1/2}({sup 194}At{sup m1})=310(8) ms and T{sub 1/2}({sup 194}At{sup ...

The {alpha}-decay properties of the neutron-deficient {sup 191}Po nucleus have been investigated at the RITU gas-filled separator using the {sup 36}Ar+{sup 160}Dy{yields}{sup 191}Po+5n reaction channel. In contrast to previous studies two {alpha}-decaying isomeric states were observed in {sup 191}Po. By analysing {alpha}-{gamma} ...

The decay properties of rp-process nuclei in the vicinity of 100Sn have been studied at the National Superconducting Cyclotron Laboratory (NSCL). The measured ?-decay half-life for 100Sn is 0.55-0.31+0.70 s, in agreement with a previous measurement. In 98In, the ?-decay of the ground state plus that of a long lived isomer were observed ...

The photochromic reaction dynamics of the spiropyran molecule 1[prime],3[prime],3[prime]-trimethyl-6-hydroxyspiro[2H-1-benzopyran-2,2[prime]-indoline] (HBPS) in solution have been studied with picosecond and femtosecond transient electronic absorption spectroscopy. Following excitation near 300 nm, the C-O bond of the molecule breaks in less than 100 fs to form a metastable species. A small ...

Relativistic energy fragmentation of a 1~GeV/nucleon 208Pb beam was used to populate a wide range of nuclei on both sides of the valley of ?-stability. The structure of these nuclei was studied by the identification of discrete ?-ray transitions depopulating isomeric states with lifetimes in the nano- to millisecond range. Highlights of the experiment include the first ...

It was observed by Dole and Williams that in gammairradiation of a polyethylene (PE)--cis-polybutadiene (CPB) blend at 142 deg C, the PE was protected to some extent against decay of vinyl groups and evolution of hydrogen while the CPB underwent cis-trans isomerization. The amount of energy which must be transferred to CPB to bring about its ...

First experimental evidence for a high-spin isomer (25/2+) in 97Cd, a waiting point in the astrophysical rapid proton capture process, is presented. The data were obtained in ?-decay studies at NSCL using the new RF Fragment Separator system and detecting ?-delayed protons and ?-delayed ? rays. Decays from ground and isomeric states ...

In this work, we report on studies of the nature of the dynamics and hydrophobic binding in cyclodextrins and human serum albumin protein complexes with orange II. With femtosecond time resolution, we examined the proton-transfer and trans-cis isomerization reactions of the ligand in these nanocavities and in pure solvents. Because of confinement at the ground state, the ...

Structures above the two-particle isomeric states in 188Pb have been identified. Their properties imply the presence of three minima in the nuclear potential well, associated with spherical, oblate, and prolate deformations. The fragmented decay of the K?=8-, 1 ?s prolate isomer leads to the identification of the yrare collective band presumably based on ...

New isomeric states with J(sup (pi))=69/2(sup +),(tau)(sub m) = 13 (1) ns in (sup 211)Rn and J(sup (pi))=33(sup -),(tau)(sub m) = 7(1) ns in (sup 212)Rn have been identified. They decay by enchanced E3 transitions with strengths of 33(3) and 43(6) single ...