The energy dependence of reflection coefficient of ultra-cold neutrons from /sup 113/Cd and /sup 155/Gd strongly absorbing element surface is measured. Samples were prepared by the method of thermal evaporation in vacuum directly in neutron beam. The spec...

The development of (149) Sm-Mossbauer spectroscopy includes the theory needed to evaluate the hyperfine field and quadrupole splitting as a function of temperature and the preparation of a source of sufficient activity to make measurements feasible within...

Alpha spectra from the (n, alpha ), reaction on exp 147 Sm, exp 149 Sm, exp 143 Nd were measured using Sc filtered beam. Cross sections for exp 149 Sm and exp 143 Nd to be 13.4+-5 mu b and 42.2+-4.3 mu b, respectively, were measured. The validity was conf...

Muonic X-rays of the sequence $sup 144$Sm, $sup 147$Sm, $sup 149$Sm were measured in order to describe the nucleon charge distribution. (FR)

The average partial cross sections of the (n, alpha )-reaction on sup 143 Nd, sup 147 Sm and sup 149 Sm at a neutron energy of 2.2, 24.5 and 144 keV achieved by using the interference filters were measured. The dependence of the strength function for alph...

The high-spin states of exp 149 Sm sub 87 were studied with the reactions exp 150 Nd( exp 3 He,4n) and exp 148 Nd( alpha ,3n). A band-like structure was observed and compared with similar patterns in the neighbouring N = 87 isotones. Three prominent featu...

{beta} decay of {sup 113}Cd was studied with the help of a low background CdWO{sub 4} crystal scintillator (mass of 434 g) in an experiment at the Gran Sasso National Laboratories of the INFN for a period of 2758 h. The shape of the spectrum of the non-unique fourth-forbidden decay of {sup 113}Cd was measured, and ...

/sup 113/Cd NMR has been used to determine the structures of the multiple metal-binding sites in the two major isoproteins of metallothionein from mammalian livers (rabbits, calf, and human) and from Scylla serrata hepatopancreas. The native protein isolated from the livers of rabbits that had been subjected to repeated injections of /sup ...

Following the fall of the Iron Curtain there is an increasing availability of stable isotopes at affordable prices, a fact which has encouraged the production of single crystals with variable isotopic compositions. These samples have been copiously used to gain information on phonons. Here we briefly review the information obtained. It involves: (1) Dependence of the lattice parameters on isotopic ...

is 0.02 rather than 0.9 as in natural samarium from the neutron flux onto 149Sm during the uranium fission. It is thus deduced that the neutron capture ...

Results are given of tests on resonance absorption neutron polarising filters containing (149)Sm. The temperature dependence of the transmittance was measured as a function of neutron energy using the time of flight method on a pulsed source. These measur...

One interesting class of fundamental symmetry violation tests involves the measurement of low energy neutron transmission through a thick target as projectile/target spin orientations are changed. As the neutron beam propagates through a target, certain components are preferentially absorbed by nuclear resonances. This induces regenerative effects in thick targets, known as ...

& Armitage 1980, 113CdII salts have been administered to rabbits and Zn2,113Cd5- MT isolated. For five 113Cd ions present in dis- tinct sites five 113Cd resonances would be expected. However, in the 113Cd NMR two additional, different molecular species (adapted from ...

Samples of $sup 233$U and of natural thorium have been irradiated in high neutron-flux facilities, in both soft and hard neutron spectra, and for both short and long exposure times. Included are exposures resulting in depletions of more than 90 percent of the $sup 233$U in the fissile material and burnups of more than 30,000 MWd/MT in the fertile material. Fission-product poison cross ...

The Belgian Material Test Reactor BR2 is a strongly heterogeneous high-flux engineering test reactor at SCK-CEN (Centre d'Etude de l'Energie Nucleaire) in Mol with a thermal power of 60 to 100 MW. It deploys highly enriched uranium, water-cooled concentric plate fuel elements, positioned inside a beryllium reflector with a complex hyperboloid arrangement of test holes. The ...

The gamma -quanta yields for direct transitions near p-wave parity violating /sup 111/Cd and /sup 113/Cd neutron resonances for which parity violating have been obtained earlier have been measured. Investigations were carried out by the time-of-flight met...

Solid-state [sup 113]Cd NMR chemical shift ([delta][sup iso]) and chemical shift anisotropy ([delta][sub ii]) data are reported for crystalline samples of three different compounds containing the [S[sub 4]Cd[sup 10](SPh)[sub 16

New level schemes up to 3 MeV are constructed for (sup 111,113)Cd on the basis of (n, n' (gamma)) and (n, (gamma)) experiments of Baskova et al. More than 40 new levels are introduced in both nuclides in the 1/2-15/2 spin range. Numerous new spin, parity,...

S>Two-neutron pickup reactions were performed on targets of /sup 149/Sm and radioactive /sup 151/Sm using 18-MeV protons. The outgoing tritons from the / sup 151/Sm target were analyzed with a magnetic spectrograph at 16 angles between 6 and 80 deg . Unlike the twoneutron transfer data on neighboring even--even targets, the angular distributi ...

113Cd-NMR studies have established that vertebrate and invertebrate metallothioneins contain two unique metal-thiolate clusters. However, it proved to be difficult to account theoretically for all features of the 113Cd-NMR spectra. In a reinvestigation of these features using chromatographically homogeneous ...

The spectra of {alpha} particles in ({ital n},{alpha}) reactions induced on {sup 144,147,149}Sm by neutrons with energy between {approx}12 and 20 MeV are greatly affected by the shell structure of the target nucleus. Semimicroscopical calculations made in the framework of the pickup model, assuming dominance of transitions to neutron-hole states of the ...

The parity violation effects such as ((delta)-vector(sub n), p-vector(sub (gamma))) in the integral (gamma)-spectra from the reactions (sup 113)Cd(n,(gamma))(sup 114)Cd and (sup 56)Fe(n,(gamma))(sup 57)Fe are equal to: d(sub n,(gamma))(sup (Sigma))=(4.04 ...

The cadmium(II) derivatives of ovotransferrin and human serum transferrin have been investigated through {sup 113}Cd and {sup 13}C NMR spectroscopy. A sharp {sup 113}Cd signal due to the bound Cd(II) ion is observed at 21.6 and 11.7 ppM for ovotransferrin and human serum transferrin, respectively. These chemical ...

Temperature dependences of spin-lattice relaxation rates of the {sup 113}Cd and {sup 19}F lattice nuclei in the CdF{sub 2} semiconductor crystals containing bistable In and Ga impurity centers show that the relaxation mechanisms in the CdF{sub 2}:In and CdF{sub 2}:Ga crystals are different. The basic mechanism of spin-lattice relaxation of the {sup ...

We performed double resonance spectroscopy on the ground-state hyperfine splitting of {sup 113}Cd{sup +} ions trapped in a rf linear trap. The ions were optically pumped by UV light from the {sup 106}Cd lamp and cooled by He buffer gas. The ground-state hyperfine splitting was measured to be 15 199 862 855 Hz with the precision of 1.3x10{sup -11}. The ...

An analysis is carried out for the experimental and the theoretical works on study of excitation sup 103 Rh, sup(107, 109)Ag, sup(111, 113)Cd, sup(113, 115)In, sup 176 Lu and sup 197 Au nuclei at annihilation of positrons with atomic electrons. This analy...

Estimates are drawn for the total radiative widths of exp 123 Te, exp 143 Nd, exp 147 Sm and exp 149 Sm on the basis of experimental values of the strength functions of gamma -transitions between the compound states obtained in the study of (n, gamma a) r...

Neutron capture cross sections have been determined for exp 145 Nd, exp 149 Sm, exp 101 exp 102 exp 104 Ru, exp 242 Pu, exp 105 Pd, exp 151 exp 153 Eu, and exp 103 Rh. In addition, total neutron cross sections for sodium near minima have been investigated...

The feasibiity and techniques for carrying out transfer spectroscopic experiments with radioactive targets having half lives down to a fraction of a year are reviewed. The use of such radioactive targets is illustrated by recent studies of the spectroscopy of /sup 149/Sm, /sup 174/Lu and /sup 247/Bk using (p,t) transfer spectroscopy.

Neutron cross section evaluations of the fission-product isotopes, (sup 95)Mo, (sup 99)Tc, (sup 101)Ru, (sup 103)Rh, (sup 105)Pd, (sup 109)Ag, (sup 131)Xe, (sup 133)Cs, (sup 141)Pr, (sup 141)Nd, (sup 147)Sm, (sup 149)Sm, (sup 150)Sm, (sup 151)Sm, (sup 152...

The main components studied using the Moessbauer effect are as follows: for exp 149 Sm:SmB sub 6 (I.V. varies with temperature), SmS (I.V. varies with pressure), Smsub(1-x)Ysub(x)S (I.V. varies with x); for exp 151 Eu:EuCu sub 2 Si sub 2 (I.V. varies with...

The low- and medium-spin structure of the four nuclei exp 148 Sm sub 86 , exp 147 Nd sub 87 , exp 149 Sm sub 87 and exp 151 Gd sub 87 has been investigated experimentally and theoretically. The low-spin states of exp 151 Gd were obtained in the EC and bet...

The present work gives a description of IBM-1620 codes to calculate the change of exp 135 Xe and exp 149 Sm concentrations at reactor transitions from one power level to another. The numerical results on test calculations as well as the ET-RR-1 reactor ca...

Up to now, there was no benchmark to validate the Fission Products (FPs) cross sections in criticality safety calculations. The protection and nuclear safety institute (IPSN) has begun an experimental program on 6 FPs ((sup 103)Rh, (sup 133)Cs, (sup 143)N...

Gamma-ray angular correlations have been measured for several cascades populated in the decays of /sup 147,149/Eu to /sup 147,149/Sm. The general features of the decay schemes have been confirmed, and the spin of the 1054-keV level in /sup 147/Sm was determined to be 3/2. Multipole mixing ratios for several gamma transitions have been deduced.

The results of a study of the compound nucleus [sup 114]Cd by neutron time-of-flight spectroscopy methods are presented. Targets of both natural cadmium and cadmium enriched in the 113 isotope were used. The neutron total capture and neutron transmission were both measured. A total of 275 new resonances were located. In addition, 102 other resonances which were previously known but not assigned to ...

GAMMA-spectra, angular distributions and linear polarization of gamma -quanta from the /sup 111,113/Cd(n, n' gamma ) reactions, as well as gamma -spectra from /sup 110,112/Cd(n-bar/sub res/' gamma )/sup 111,113/Cd are measured. Diagrams for /sup 111,113/C...

The astrophysical origin of a p-nucleus {sup 115}Sn has remained still an open question. The nucleus {sup 115}Sn may be produced by a weak branch of the s-process through a beta-unstable isomer in {sup 113}Cd. However, a neutron capture cross-section to this isomer has not been measured with high accuracy at any energy. A neutron capture cross-section for ...

Gene 32 protein (g32P), the single-stranded DNA binding protein from bacteriophage T4, contains 1 mol of Zn(II)/mol of protein. This intrinsic zinc is retained within the DNA-binding core fragment, g32P-(A+B) (residues 22-253), obtained by limited proteolysis of the intact protein. Ultraviolet circular dichroism provides evidence that Zn(II) binding causes significant changes in the conformation ...

Cadmium can replace zinc and magnesium in alkaline phosphatase from Escherichia coli, which permits the characterization of the catalytically important metal-binding sites by /sup 113/Cd NMR. At pH 6.5, in the absence of phosphate, two equivalents of cadmium are bound in identical sites (A), one in each monomer. Either raising the pH or phosphorylation of ...

Partial averaged cross sections have been measured for (n,..cap alpha..) reactions in /sup 143/Nd, /sup 147/Sm, and /sup 149/Sm in the neutron-energy regions 2, 24.5, and 144 keV using interference filters in the VVR-M reactor at the Nuclear Research Institute of the Ukrainian Academy of Sciences. The ..cap alpha..-particle strength function for these ...

Collinear laser--ion-beam spectroscopy has been used to measure the hyperfine structure (hfs) of nine metastable even-parity levels (E<15000 cm/sup -1/) and nine odd-parity levels (EV32000 cm/sup -1/) in /sup 147,149/Sm II. The mass resolution of 1 part in 350 eliminates spectral congestion due to overlapping lines from neighboring isotopes. The ...

The present work describes the first measurements of averaged-over-resonances cross sections for the reactions /sup 147/Sm (n, ..cap alpha..)/sup 144/Nd, /sup 143/Nd(n, ..cap alpha..)/sup 140/Ce, and /sup 149/Sm(n, ..cap alpha..) /sup 146/Nd with neutrons of approx. 30 keV obtained at an electrostatic accelerator from the /sup 7/Li(p, n)/sup 7/Be reaction. ...

Modeling of nuclear reactor fuel burnup indicates that the production of samarium isotopes can vary significantly with reactor type and fuel cycle. The isotopic concentrations of {sup 146}Sm, {sup 149}Sm, and {sup 151}Sm are potential signatures of fuel reprocessing, if analytical techniques can overcome the inherent challenges of lanthanide chemistry, ...

ABS>The effective neutron cross section of Sm/sup 149/ was determined in three different reactor positions by measuring mass spectrometrically the amount of Sm/sup 150/ formed by neutron capture. Analysis of the results shows that the effective cross section of Sm/sup 149/ in a well-thermalized neutron spectrum of known temperature can be calculated to within plus or minus 2%. The ...

Decay schemes of the nuclei (sup 171)Os, (sup 172)Os and (sup 173)Os were studied using the reactions (sup 144)Sm((sup 30)Si, 3n)(sup 171)Os, (sup 144)Sm((sup 31)P, p2n)(sup 172)Os and (sup 149)Sm((sup 28)Si,4n)(sup 173)Os. The 5/2(sup -)(523) and i(sub 1...

High-spin states in 179 Au have been studied experimentally using the 149 Sm ( 35 Cl ,5n) fusion-evaporation reaction at beam energies of 164-180 MeV . A rotational band built on the 1 /2 [660]( i13/2 ) Nilsson orbital has been established for 179 Au . Properties of the 1 /2 [660]( i13/2 ) bands in the odd- A Au nuclei are discussed with ...

/sup 149/Eu levels have been investigated using the /sup 149/Sm (d, 2n) reaction at Esub(d)=13.5 MeV and the /sup 152/Sm (p, 4n) reaction at Esub(p)=26-39 MeV. Prompt gamma-gamma coincidences, excitation functions and angular distributions were used to st...

Experimentally determined level densities of the transitional isotopes {sup 148,149,150,152}Sm at excitation energies below and around the neutron binding energy are compared with microcanonical calculations based on a Monte Carlo approach to noncollective level densities, folded with a collective enhancement estimated in the frame of the interacting boson model (IBM). The IBM parameters are ...

Four different types of neutron capture gamma-ray experiments are used to investigate the energy level structure of the odd-N Sm isotopes. The gamma ray branching ratios for the low-lying levels are used to help follow the level structure from the well-deformed $sup 155$Sm and $sup 153$Sm nuclei, through the transitions, $sup 151$Sm, $sup 149$Sm ...

The level scheme and electromagnetic properties of /sup 148/Pm have been studied using /sup 149/Sm(d,/sup 3/He) and /sup 148/Nd(p,n..gamma..) reactions. Combining these measurements with estimates for E2/M1 decay branching ratios leads to the tentative conclusion that /sup 148/Pm/sup g,m/ are in thermal equilibrium during the s-process. The branch at /sup ...

Modeling of nuclear reactor fuel burnup indicates that the production of samarium isotopes can vary significantly with reactor type and fuel cycle. The isotopic concentrations of 146Sm, 149Sm, and 151Sm are potential signatures of fuel reprocessing, if analytical techniques can overcome the inherent challenges of lanthanide chemistry, isobaric ...

We have measured the {sup 149}Sm(n,alpha){sup 146}Nd cross section at 6.0 MeV to be 0.12+-0.018 mb. This is the first reported result for this cross section in the MeV region and so should be helpful for constraining nuclear data evaluations (which differ by a factor of 40 for this reaction at this energy) and for testing and improving nuclear models. The ...

The nucleocapsid (NC) protein (p15) of the human immunodeficiency virus (HIV) has been cloned and overproduced (under the control of a phage T7 promoter) in soluble form in an Escherichia coli host. The soluble NC protein is a fusion protein containing 15 amino acids from the T7 gene 10 and 7 amino acids from the HIV p24 protein at the N-terminus to make a protein of 171 amino acids. The plasmid ...

The half-lives and logft values for the fourth-forbidden non-unique beta decays of the ground states of {sup 113}Cd and {sup 115}In were calculated using a transparent formulation for the {beta}{sup -} transition amplitude. The microscopic quasiparticle-phonon model (MQPM) was used to calculate the initial and final states of the transitions. The ...

The magnetic moments of several short-lived states in /sup 103/Rh, /sup 111,113/Cd, and /sup 123,125/Te isotopes have been measured by the transient field technique. The results, together with those obtained earlier in the /sup 107,109/Ag isotopes, have been compared to predictions of various models and calculations. In the /ital Z/=45,47 isotopes, the odd ...

A search for the fourfold forbidden {beta} decay of {sup 113}Cd has been performed with CdZnTe semiconductors. With 0.86 kg {center_dot} d of statistics a half-life for the decay of T{sub 1/2}=[8.2{+-}0.2(stat.){sub -1.0}{sup +0.2}(sys.)]x10{sup 15} yr has been obtained. This is in good agreement with published values. A comparison of the spectral shape ...

The Zn/sup 2+/ and Cd/sup 2+/ adducts with the 18-residue peptide comprising the amino acid sequence of the first finger (residues 13 through 30) of retroviral nucleic acid binding proteins p7 from HIV-1 (the causative agent of AIDS) have been prepared. /sup 1/H NMR data indicate that the metal adducts are 1:1 compounds that are stable in aqueous solutions for at least a month. The /sup ...

The ratio of the gamma transition intensities was measured at 558 keV and 617 keV gamma transition energies separating the first excited states of (sup 114)Cd and (sup 112)Cd. The sample contained 95.9% (sup 111)Cd and 0.55% (sup 113)Cd. The neutron captu...

The technique of an experiment is described and the results of measurements of neutron spectra from the (p,n) reactions on /sup 52,53,54/Cr, exp 56 Fe, /sup 60,62/Ni, /sup 90,91,94/Zr, exp 113 Cd, exp 115 In, exp 122 Sn, exp 181 Ta and exp 197 Au nuclei a...

We report on the pulse height spectrum observed with a CdTe detector in a low-background shield. The spectrum is dominated by the T/sub 1/2/approx.10/sup 16/ yr ..beta../sup -/ decay of /sup 113/Cd. Limits are set on the double beta decay of the isotopes /sup 106,114,116/Cd and /sup 128,130/Te, and the prospects for a more sensitive search for this mode of ...

A neutron capture cross section for the {sup 112}Cd(n, gamma){sup 113}Cd{sup m} reaction has been measured with neutrons provided from a nuclear reactor in order to study the astrophysical origin of a rare p-process isotope {sup 115}Sn, which may be produced by a nucleosynthesis flow through {sup 113}Cd{sup m} in ...

Parameters of effective fragments approximating neutron absorption by all sup 233 U thermal neutron fission products and sup 232 Th fission neutrons products excluding rapidly saturated ( sup 135 X, sup 105 Rh, sup(149, 151)Sm, sup 113 Cd, sup 157 Gd) are...

Low-lying positive parity levels of the isotopes in natural cadmium were Coulomb excited with 2.7--4.2 MeV protons. Eight levels of /sup 111/Cd up to 1130.4 keV and four levels of /sup 113/Cd up to 680.5 keV excitation energy, and the first 2/sup +/ states in even-even isotopes (/sup 110,112,114,116/Cd) were excited. A 50 cm/sup 3/ Ge(Li) detector was used ...

Emulsification is employed in conjunction with supercooling of aqueous solutions to impose the NMR slow-exchange regime upon labile inorganic complexes. This allows direct observation of the NMR resonances for the various complexes in solution. /sup 113/Cd NMR results are presented for the Cd(II)/glycine system.

The yield dependence of (y,p) reactions on maximum energy' E in the bremsstrahlung spectra for Cd/sup 112/ Cd/sup 113, Cd i/sup 114/ and Cd/sup 116/ was investigated. (R.V.J.)

The spectra of ..gamma.. rays accompanying neutron capture by the nuclei /sup 147//sup ,//sup 149/Sm is isolated resonances have been measured by the time-of-flight method in the IBR-30 reactor. Absolute intensities have been obtained for a number of transitions. From a combination of the results of the present work and published data we have determined ...

The WIMS-D4 code has been modified (WIMS-D4m) to generate burn-up dependent microscopic cross sections for use in full core depletion calculations. The calculation of neutron absorption by fission products can be obtained from a reduced fission-product-chain model that includes the {sup 135}Xe and {sup 149}Sm chains, and a lumped fission product to account ...

High spin states of {sup 164}Lu are populated using the {sup 149}sm({sup 19}F, 4n){sup 164}Lu reaction at a beam energy of 85 MeV. The experiment was carried out at the Nuclear Structure Research Lab the University of Rochester, and the beam was provided by the Rochester MP tandem accelerator. Gamma rays were detected by 8 Compton-suppressed Ge detectors, ...

Anomalous scattering lengths of natural Sm for thermal neutrons with wavelengths between 0.827 and 1.300 A have been determined using a single crystal of a Sm-complex of known structure. 140 selected reflections were measured at each wavelength and b/sub o/+b' and b'' refined in each case. The values obtained are in good agreement with theoretical values obtained from a ...

Anomalous scattering lengths of natural Sm for thermal neutrons with wavelengths between 0.827 and 1.300 A have been determined using a single crysrtal of a Sm-complex of known structure. 140 selected reflections were measured at each wavelength and b/sub 0/ + b' and b'' refined in each case. The values obtained are in good agreement with theoretical values obtained from ...

Methods for the determination of Rh/sup 103/, Nd/sup 143/, Sm/sup 149/, Sm/sup 151/, and Gd/sup 155/ in irradiated uranium metal are described. The concentrations of the five isotopes were determined in a rod of uranium, which had received an irradiation of approximately 850 Mwd/t in a Calder reactor. Rh/ sup 103/ was determined colorimetrically ...

Alpha particles near 10 Mev were detected following thermal neutron capture in Sm/sup 149/ Sm/sup 147/, and Nd/sup 143/. Branching ratios to the excited states of the residual nuclei were measured. Relative probabilities of alpha emission to that of capture gamma rays were found at 10/sup -4/ to 10/ sup -6/. Upper limits for sigma (n, ...