A cooling system is described having a boiler, a heat source for the boiler including a burner, an absorption machine having a generator section and an absorber section, a steam trap for the generator section of the absorption machine, a condensate tank with a vent line to atmosphere and work to be heated. The ...
Energy Citations Database
A model is derived for the resonance absorption of molecular bands composed of Lorentzian lines is suitable for calculating fluorescence from irradiated air. The model is based on an explicit functional form derived for the resonance absorption of a single Lorentzian line which properly accounts for the possibility ...
With the STIS E230H mode (R-118,000) , we have identified about twenty absorption components in line
NASA Technical Reports Server (NTRS)
... NONLINEAR SYSTEMS, RADIATION ABSORPTION, FIBER OPTICS TRANSMISSION LINES, CROSS SECTIONS, VISIBLE SPECTRA, CASTING ...
DTIC Science & Technology
Different spectrometers are used to divide light finely into its spectral components, and to accurately "read" absorption and transmission "lines" in the ...
NASA Website
... the intestinal lining, a bioadhesive polymer should generate sufficient interfacial bonds between ... Figure 1, Appendix, details the absorption ...
A multitude of absorption lines seen shortward of QSO Ly-alpha emission, that cannot be traced to heavy element absorption systems, are assumed to be Ly-alpha lines arising in intervening clouds. Studies of these Ly-alpha clouds, typically done at 1 A or ...
National Technical Information Service (NTIS)
Analysis of the spacing between absorption-line systems in quasar spectra and comparison against deep optical survey data for the separation between superclusters of galaxies indicates that the absorption originates in the superclusters. Supported by analogous data on the absorbing gas in the galactic and Magellanic Cloud halos, this ...
An analysis is made of a laser with an external absorption cell and a system of opposite (strong and probe) waves. The frequency of the probe wave is shifted relative to the strong saturating wave, and this makes it convenient to record an inverted Bennett hole in an absorption line of the extracavity absorber, and ...
This paper lists the strongest atomic resonance lines longward of 912 A that are suitable for use in search lists for QSO absorption systems. The 179 lines have been selected according to the cosmic abundance of the element, the ionization potential of the atom, and the expected unsaturated equivalent width of the ...
The paper solves in closed form the resonant-modulation problem for the effect of the high-frequency electric field on the absorption spectra of the three-level system. It is shown that an electric field whose frequency is made resonant with the separation between two upper levels should give rise to the two absorption ...
Quasar absorption lines in flat universes with nonzero cosmological constant Lambda are examined and
... Accession Number : AD0619963. Title : INVESTIGATION OF NARROW LINE ABSORPTIONS IN SINGLE CRYSTAL CALCITE. ...
... Title : ABSORPTION LINE SERIES AND AUTOIONIZATION RESONANCE STRUCTURE ANALYSIS IN THE ULTRAVIOLET SPECTRUM OF SR I,. ...
Multiphoton transition probability can be manipulated by tailoring the ultrashort laser pulses. In this paper, we theoretically and experimentally investigate the influence of the absorption bandwidth and line shape on the coherent control of two-photon transitions in two-level system by manipulating the femtosecond laser pulse with ...
Nov 1, 1977 ... This atlas of infrared absorption line contains absorption line parameters (line strength vs.
It is proposed that the infalling (z/sub abs/>z/sub em/) absorption-line systems in the quasar PKS 0119--046 are due to a blueshifting of the broad emission lines with respect to the rest frame of the underlying galaxy in which the quasar is located rather than being due to a real high-velocity infall. The spectrum of PKS 0119-046 ...
The optical absorption lines of quasars are examined, and implications of the lines for the physical
A multiline absorption spectroscopy technique was investigated based on the single-line absorption spectroscopy technique. An open-path methane-detecting system was designed. An LED was used as a broadband source, and a Fabry-Perot interferometer whose transmission peaks matched the methane R-branch ...
PubMed
We investigate the effects of dust extinction on integrated absorption-line indices that are widely used to derive constraints on the ages and metallicities of composite stellar systems. Typically, absorption-line studies have been performed on globular clusters or elliptical galaxies, which are mostly dust-free ...
E-print Network
Ten ghost spectra which simulate the absorption-line spectrum of the QSO 4C 05.34 are generated on a computer and analyzed according to the rules of Bahcall and Goldsmith. The results conclusively show that the number and properties of the absorption redshift systems proposed by Bahcall Goldsmith are insignificantly different ...
...2. Percolation Tests 3. Subsurface Absorption Systems B. Community Wastewater Disposal...Property Line 10 Septic Tank 50 Absorption field 1 100 Seepage pit 1 100 Absorption Bed 1 100 Sewer Lines...
Code of Federal Regulations, 2011
A lithium bromide absorption refrigerating machine, using a water solution of lithium bromide as the working substance, is briefly described and illustrated by a line diagram and s-t diagram. The machine operation is analyzed as a two-cycle system: the di...
The problem of multi-level absorption of i.r. laser radiation in polyatomic gases is examined using the density matrix formalism. The general condition under consideration is that field broadening effects are significant, but the detailed and discrete fea...
... 4. The Triple Star Systems 63 Gem A and HR 2896. ... known to be triple from spectroscopic work, and absorption lines from all three stars can be ...
Mar 4, 2007 ... A preliminary analysis of the spectra reveals several absorption lines associated with the z=1.52 system reported by Martini et al. ...
Accordling to the theory of big-bang nucleosynthesis (Yang ... the Lyman a absorption lines in high red-shift quasar spectra. These systems are ...
These types of lines, called self-absorption systems, have been found in high- redshift quasars and were thought to be produced by material in the quasar ...
We use recent observations of the He I ?10 830 � absorption line and 3D hydrodynamical numerical simulations of the winds collision to strengthen the case for an orientation of the semimajor axis of the massive binary system ? Carinae where the secondary star is toward us at periastron passage. These observations show that the fast ...
NASA Astrophysics Data System (ADS)
Measurements of absorption in the lines of (C-12)O, (C-13)O, HCO(+), HCN, CN, and CS toward the nuclear continuum source in Centaurus A are reported. The spectra show a number of features which can be attributed to individual molecular clouds with properties similar to dense molecular clouds in the Galaxy. The deepest absorption at the ...
The L absorption spectra of gamma - and alpha -Ce have been measured. The L sub 2 and L sub 3 spectra of both systems show white lines, but alpha -Ce exhibits an additional peak 9 eV above the white line. The white line and the EXAFS of alpha -Ce are corr...
We show that for specially designed linear dispersive media with one absorption line and one gain line, the Sommerfeld precursors of a pulse can be amplified leading to an earlier detection of the signal. Also, we show that in some systems with one strong absorption line, a ...
We show that for specially designed linear dispersive media with one absorption line and one gain line the Sommerfeld precursors of a pulse can be amplified leading to an earlier detection of the signal. Also, we show that in some systems with one strong absorption line, a ...
This file contains observations that are part of supplemental time cycle 3 allocation. This allocation is for 25 hours of spacecraft time. The Absorption Line Survey of bright quasars provides a homogeneous data base for studying fundamental questions about the origin and evolution of gaseous systems in the universe. The initial ...
PART 3 consists of replacement targets for objects pulled from the original submission because targets had been previously observed in other programs. The Absorption Line Survey of bright quasars provides a homogeneous data base for studying fundamental questions about the origin and evolution of gaseous systems in the universe. The ...
PART 2 consists of replacement targets for objects pulled from the original submission because targets had been previously observed in other programs. The Absorption Line Survey of bright quasars provides a homogeneous data base for studying fundamental questions about the origin and evolution of gaseous systems in the universe. The ...
The absorption line shape of Cs-Ar system is recorded using two-photon ionization of the system with Cs(7P) as an intermediate state. New satellite structures in the wings of Cs(7P) are observed which were not resolved in previous absorption measurements. Also the absolute ...
A heat exchanger bypass system for an absorption refrigeration system is disclosed. The bypass system operates to pass strong solution from the generator around the heat exchanger to the absorber of the absorption refrigeration system when strong solution builds up in the ...
The Quasar Absorption Line Survey of bright sources is an efficient observing program designed to provide a homogeneous data base of absorption features. The data will reveal absorption regions in galaxies, in clusters of galaxies, in voids, in large-scale structures, in Lyman ALPHA clouds, and wi provide ...
A new attempt is made to identify absorption lines in quasar spectra with H/sub 2/ and CO molecular lines on the basis of actual ultraviolet spectra of the galactic interstellar medium. No molecular lines can be detected in the spectra of 4C 05.34, OQ 172, or 0830+115. In a fourth quasar, PHL 957, no single ...
An on-line analyzer to monitor the gold in solutions from the carbon-in-pulp process is described. The automatic system is based on the delivery of filtered samples of the solutions to a distribution valve for measurement by flameless atomic-absorption sp...
An on-line analyser to monitor the gold in solutions from the carbon-in-pulp process is described. The automatic system is based on the delivery of filtered samples of the solutions to a distribution valve for measurement by flameless atomic-absorption sp...
A selective spectral-line modulation technique for performing continuum-source atomic absorption is described and its operation discussed. In the new technique, discrete droplets of a metal salt standard solution are periodically introduced into a source modulator flame. The atom clouds produced within this flame move through the radiation path of a ...
Studies of QSO absorption lines can be used to discover superclusters of metal-line systems (thought to be associated with galaxies) at large redshift, analogous to the absorbers found in the field surrounding the southern pair Tol 1037/1038. The unique ability of QSO absorption ...
Studies of QSO absorption lines can be used to discover 'superclusters' of metal-line systems (thought to be associated with galaxies) at large redshift, analogous to the absorbers found in the field surrounding the southern pair Tol 1037/1038. The unique ability of QSO absorption ...
The strong absorption lines in the spectrum of the quasar Q0248 + 4302 are discussed. The absorption has been shown to be produced in a sinuous tidal tail which emanates from the nearby galaxy pair G0248 + 4302A,B. There is a velocity difference of about 260 km/s between the systemic redshift of the interacting ...
In the spectrum of the quasar PKs 2020--370 (z/sub em/ = 1.050), we find Ca II absorption lines both at near zero redshift and at z/sub abs/ = 0.02865 +- 0.00007. The latter is closely similar to the redshifts of two galaxies in the group Klemola 31, which are nearby on the plane of the sky. This observation adds to the evidence that the ...
quasar's broad emission lines. The reddest extent of the broad-line absorption .... lines from the quasar and the low signal-to-noise ...
Narrow absorption features in the IUE high dispersion spectrum of the Wolf-Rayet system HD 193077 are identified. Components in the resonance lines of Si IV, C IV, Al III, Si II, and C II at -44 km/sec with respect to the undisplaced lines are detected. I...
Solid-state organic compounds such as ?-lactose-monohydrate and biotin have been shown to have narrow and intense THz absorption features at room temperature. Interest in lineshapes in the THz region is justified not only for practical reasons, since they are of crucial importance to spectroscopy-based identification of materials, but also because of the information the ...
... Descriptors : (*VAPOR PRESSURE, RESONANCE ABSORPTION), (*COPPER, LINE SPECTRA), ABSORPTION SPECTRA, SPECTROSCOPY ...
... Title : Calculation of Molecular Absorption Parameters and Updating the AFGL atmospheric Line Parameter Compilation. ...
... Title : Resonance Line Absorption Method for Determination of Nitric Oxide Concentration. Descriptive Note : Final rept.,. ...
Dec 18, 1998 ... Absorption lines are discrete colors of light that are absorbed by intervening matter; this absorption leaves holes or "lines" in the ...
In the ultraviolet spectra of hot stars, absorption lines can be seen from highly ionized species in
The strongest and generally most useful optical interstellar absorption lines include the D lines of
We have made a new determination of the orbital parameters of the WC8+08-9 binary system CV Serpentis (HD 168206), through the analysis of spectroscopic observations obtained at CTIO (Chile) and CASLEO (Argentina), together with previously published data. The period that best fits the radial velocity variations of both the Wolf-Rayet emission lines and the ...
HST ultraviolet spectra and ground-based optical spectra of the bright quasar PKS 0405-123 are used to identify two absorption-line systems probably produced by the halos of foreground galaxies. The quasar lies in a rich galaxy field. Loose groups of galaxies are present in the field at mean z1 = 0.1669 and mean z2 = 0.3519. Ly-alpha, C IV 1549 A, and ...
A heterodyne spectrometer for the 10 micron wavelength range was used for the investigation of absorption lines in planetary and stellar atmospheres with very high resolution. The atmosphere of Mars and the circumstellar envelopes of bright IR stars were investigated using IR telescopes. The Mars observations provide the isotope ratios C-12/C-13 and ...
We analyze the absorption and emission-line profiles produced by a set of simple, cool gas wind models motivated by galactic-scale outflow observations. We implement Monte Carlo radiative transfer techniques that track the propagation of scattered and fluorescent photons to generate one-dimensional spectra and two-dimensional spectral images. We focus on ...
The large optical depth in absorption of the Ly-alpha line in damped Ly-alpha systems implies that the emission line produced by H2 regions is very broad, since the number of diffusions is very large. The emission lines observed in DLy-alpha systems are n...
