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Relativistic effects in the atomic and nuclear few-body problems

Description: Relativistic effects in the atomic and nuclear few-body systems are classified and discussed with the emphasis on electromagnetic transitions. The size of relativistic corrections, calculational techniques and ambiguities, and comparison of theory and experiment are considered. 8 figures.
Date: January 1, 1980
Creator: Friar, J.L.
Item Type: Refine your search to only Article
Partner: UNT Libraries Government Documents Department
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Applications of induction linac technology to heavy ion fusion

Description: Evaluation of the application of heavy ion accelerators to ignite d-t pellets in a thermonuclear reactor is discussed. Accelerator design requirements considered include transport-limited current, beam injection conditions, and pulse bunching and focusing characteristics. The desirability of resonant and non-resonant accelerating structures is comparatively examined. The required power system switch tubes are discussed. It is concluded that heavy ion accelerators could offer a promising solutio… more
Date: July 1, 1977
Creator: Faltens, A. & Keefe, D.
Item Type: Refine your search to only Article
Partner: UNT Libraries Government Documents Department
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General multi-configuration Hartree--Fock program: MCHF77. [In FORTRAN (double precision) for IBM 360 and 370]

Description: This technical report contains a listing of a general program for multi-configuration Hartree--Fock (MCHF) calculations, including its documentation. Several examples are given showing how the program may be used. Typical output for several cases is also presented. This program has been tested over an extended period of time for a large variety of cases. This program is written for the IBM 360 or 370 in double-precision arithmetic.
Date: November 1, 1977
Creator: Fischer, C F
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
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Capillary liquid chromatography using laser-based and mass spectrometric detection

Description: The research performed during the past year has mainly focused on investigating and minimizing the problems listed below that limit the practical utility of these capillary electrokinetic separation techniques in chemical analysis. (1) Analyses are hindered by poor reproducibility. This is largely a result of complicated and irreproducible capillary wall-solute interactions that often result in adsorption and mobility changes. (2) While the Micellar Electrokinetic Capillary Chromatography techn… more
Date: January 1, 1991
Creator: Sepaniak, M.J. & Cook, K.D.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
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MAP3S precipitation chemistry network. Third periodic summary report, July 1978-December 1979

Description: The MAP3S Precipitation Chemistry Network consists of eight collection sites in the northeastern United States. Precipitation event samples are collected by cooperating site operators, using specially developed sampling equipment. In this, the third periodic summary report, are listed field and concentration data for the period July 1, 1978 to December 31, 1979. Over three years' samples have been collected at most of the sites, which went into operation between September 1976 and October 1978.… more
Date: May 1, 1980
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
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Depth distributions of low energy deuterium implantations in (110) tungsten: a theoretical model

Description: The depth distributions of 80 eV D/sup +/ implants in (110) W have recently been measured by field desorption microscopy. Prominent structure, consisting of seven major and several minor peaks, is observed in the measured distributions. This contrasts with conventional implantation theory which predicts two peaks, one for the channeled D/sup +/ and one for the nonchanneled D/sup +/. The observed structure is explained in the present report by a model which ascribes the various peaks to D/sup +/… more
Date: March 1, 1978
Creator: Brice, D.K.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
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Heavy ion fusion half-year report, October 1, 1979-March 31, 1980

Description: Major elements of the program in the first half of Fiscal Year 1980 included: (1) characterization of the 1 amp, 1 MV, 2 ..mu..s beam after acceleration through one pulsed drift tube; (2) observation of current and energy spikes at the onset of the beam pulse occasioned by the unusually long transit-time (approx. 1 ..mu..sec) of the mass 133 ions across the diode gap; (3) completion of the full system, comprising of source and three drift-tubes, in February 1980; (4) development of new beam dia… more
Date: March 1, 1980
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
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Atomic and molecular science with synchrotron radiation

Description: This paper discusses the following topics: electron correlation in atoms; atomic innershell excitation and decay mechanisms; timing experiments; x-ray scattering; properties of ionized species; electronic properties of actinide atoms; total photon-interaction cross sections; and molecular physics. 66 refs. (LSP)
Date: November 7, 1989
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
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Studies in Hot Atom and Radiation Chemistry Progress Report: September 1977

Description: The reactive scattering of the reaction of the first excited state of C/sup +/ (/sup 4/P) with molecular hydrogen was studied over an energy range of 0.5 to 9.0 eV. The measurements indicate that the reaction proceeded by a direct mechanism and the final product was in the a/sup 3/pi state. The reaction of ground-state C/sup +/(/sup 2/P) with D/sub 2/ and H/sub 2/ was examined over the energy range of 2.5 eV to 28 eV. Over this energy range unambiguous identification of CD/sup +/ in the X/sup 1… more
Date: January 1, 1977
Creator: Koski, W. S.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
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Phase 2 of the automated array assembly task of the Low-Cost Silicon Solar Array Project. Technical quarterly report No. 6, 1 October 1979-31 December 1979

Description: The ion implantation, metallization, and plasma etching processes are highlighted. Replacement of the hydrocarbon vacuum pump oils in the ion implanter with perfluorinated polyether pump oils has decreased, but not eliminated the formation of a carbonaceous surface layer on implanted wafers. Simulated unanalyzed beam ion implantation of boron for p-on-n cell fabrication has shown preliminary favorable results, showing better performance than control analyzed beam boron implants. An ion milling … more
Date: January 1, 1979
Creator: Coleman, M. G.; Pryor, R. A.; Sparks, T. G. & Saltzman, D. L.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
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Interactions of fast atomic and molecular ions with matter

Description: Argonne's 5-MV Dynamitron accelerator is used to study the interactions of fast (MeV) atomic and molecular ions with matter. A unique feature of the apparatus is the exceptionally high resolution, in angle and time-of-flight, obtained in detecting particles emerging from the target. New imaging detector systems have been developed which allow detection of multiparticle events consisting of up to 12 particles. The work has as its main objective a general study of the interactions of fast charged… more
Date: January 1, 1989
Creator: Belkacem, A.; Kanter, E.P. & Vager, Z.
Item Type: Refine your search to only Article
Partner: UNT Libraries Government Documents Department
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Metastable phases produced by ion implantation in metals

Description: Experimental evidence for the formation of metastable phases in metals using ion implantation is reviewed. Ion channeling and transmission electron microscopy are the main experimental techniques which have been used to investigate these materials. For heavy metallic implanted species at low implanted concentrations (less than or equal to 1 at. percent), the materials are generally substitutional solid solutions, often exceeding equilibrium solid solubilities. At higher concentrations both meta… more
Date: January 1, 1977
Creator: Borders, J.A.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
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Lawrence Berkeley Laboratory year-end-report on heavy-ion fusion program

Description: An intensive theoretical program was launched to try to understand the conditions for safe propagation of intense beam currents in focussing systems, such as continuous and interrupted solenoid lens systems, and quadrupole strong-focussing systems. Analytic methods have led to significant advances in understanding of the new problems; with computational techniques a large amount of new information has been generated on space-charge-dominated transport phenomena; also, at this time a new LBL par… more
Date: September 30, 1977
Creator: Keefe, D.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
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Low energy electron capture by multicharged ions from hydrogen

Description: In order to systematically investigate the behavior of low energy electron capture cross sections, the cross sections were measured for Xe/sup 2 +/ - Xe/sup 12 +/, Ar/sup 2 +/ - Ar/sup 9 +/, and Fe/sup 5 +/ - Fe/sup 6 +/ in H and H/sub 2/ for 3 < E < 26 keV/charge, and for C/sup 3 +/ - C/sup 5 +/ in H/sub 2/ for 0.15 < E < 0.45 keV/charge. (GHT)
Date: January 1, 1980
Creator: Phaneuf, R.A.; Crandall, D.H. & Meyer, F.W.
Item Type: Refine your search to only Article
Partner: UNT Libraries Government Documents Department
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Properties of diverted plasmas with magnetically expanded flux surfaces

Description: Vertical elongated 1.3:1 elliptical plasmas in which the outermost flux surfaces are magnetically expanded and diverted by external coils into the lower half of the Doublet III vacuum vessel are described. Approximately 5 cm of the nominal 45 cm plasma minor radius is diverted to the lower chamber. The diverted flux is expanded by more than a factor of ten before reaching the vessel wall. Photographic measurements show diffused hydrogen recycling light in the lower half of the vessel, with grea… more
Date: July 1, 1980
Creator: Ali Mahdavi, M.; Ohyabu, N. & Baker, D.R.
Item Type: Refine your search to only Article
Partner: UNT Libraries Government Documents Department
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Complex fragment emission in relativistic heavy ion collisions

Description: Data relative to proton and pion production produced in central collisions have been reviewed by S. Nagamiya. Therefore, the production of complex fragments is emphasized here. A presentation is made of experimental data on d, t, /sup 3/He emission and their discussion in terms of the existing models. The size of fireball derived from the analysis of complex fragments is compared to the results of pion interferometry experiment. Interesting features observed in the distribution of charged parti… more
Date: October 1, 1979
Creator: Lemaire, M.C.
Item Type: Refine your search to only Article
Partner: UNT Libraries Government Documents Department
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Development and fabrication of a solar cell junction processing system. Quarterly report No. 2, July 1980

Description: The basic objectives of the program are the following: (1) to design, develop, construct and deliver a junction processing system which will be capable of producing solar cell junctions by means of ion implantation followed by pulsed electron beam annealing; (2) to include in the system a wafer transport mechanism capable of transferring 4-inch-diameter wafers into and out of the vacuum chamber where the ion implantation and pulsed electron beam annealing processes take place; (3) to integrate,… more
Date: July 1, 1980
Creator: Siesling, R.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
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Electrochemical photovoltaic cells. Project 65021 quarterly technical progress report, July 15-October 15, 1979

Description: During the second quarter of this program we have evaluated the photoelectrochemical performance of single-crystal MoSe/sub 2/ and GaAs, polycrystalline CdSe, and cells with RbAg/sub 4/I/sub 5/ solid electrolyte. MoSe/sub 2/ electrode exhibited very good photoresponse in electrolytes containing Br/sup -//Br/sub 2/ redox couple. The photopotential and photocurrent were larger in acid than in alkaline electrolyte. A power conversion efficiency of about 5% was achieved under 200 mW/cm/sup 2/ Xenon… more
Date: October 1, 1979
Creator: Ang, P.G.P. & Sammells, A.F.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
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Atomic x-ray production by relativistic heavy ions. [Cross sections, K and L shells, ionization 3 and 4. 88 GEV holes]

Description: The interaction of heavy ion projectiles with the electrons of target atoms gives rise to the production, in the target, of K-, L- or higher shell vacancies which are in turn followed by the emission of characteristic x-rays. The calculation of the theoretical value of the K- and L-shells vacancy production cross section was carried out for heavy ion projectiles of any energy. The transverse component of the cross section is calculated for the first time in detail and extensive tables of its nu… more
Date: December 1, 1977
Creator: Ioannou, J.G.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
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In-situ field-ion microscope study of the recovery behavior of heavy metal ion-irradiated tungsten, tungsten (rhenium) alloys and molybdenum. [30 keV W/sup +/ and Mo/sup +/]

Description: Three field ion microscope (FIM) experiments were carried out to study the annealing behavior of heavy ion irradiated tungsten, tungsten (rhenium) alloys and molybdenum. The first experiment dealt with the stage I long-range migration of tungsten self interstitial atoms (SIAs) in high purity tungsten of resistivity ratio, R = 24,000 (R = rho/sub 300//rho/sub 4/./sub 2/, where rho/sub 300/ and rho/sub 4/./sub 2/ are the room temperature and 0/sup 0/C resistivities). The FIM specimens were irradi… more
Date: June 1, 1977
Creator: Nielsen, C.H.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
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Knock-on electrons in the target chamber

Description: It is virtually certain that heavy ion beams will produce massive quantities of knock-on electrons for target chamber pressures above 1 torr. It was shown that the magnitude of the resulting current is more than sufficient to pinch the knock-on beam in most cases, assuming that a substantial fraction of this beam actually gets out ahead of the ion beam pulse. Although at least some of the ion beam experiences this defocusing, the overall effect on beam propagation is minimal if field reversal i… more
Date: January 1, 1979
Creator: Hubbard, R. F.; Goldstein, S. A. & Tidman, D. A.
Item Type: Refine your search to only Article
Partner: UNT Libraries Government Documents Department
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Oscillator strengths and transition probabilities for the intercombination transitions in Fe XXII

Description: Oscillator strengths and transition probabilities are evaluated for the intercombination transitions between the 2s/sup 2/ 2p, 2s 2p/sup 2/ and 2p/sup 3/ states of Fe XXII using configuration interaction wavefunctions. The fine-structure splittings have also been calculated. Some significant differences with previous calculations are obtained.
Date: January 1, 1979
Creator: Glass, R
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
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