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in subjects: "Electron Capture"  
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Multiple electron capture in close ion-atom collisions

Description: Collisions in which a fast highly charged ion passes within the orbit of K electron of a target gas atom are selected by emission of a K x-ray from the projectile or target. Measurement of the projectile charge state after the collision, in coincidence with the K x-ray, allows measurement of the charge-transfer probability during these close collisions. When the projectile velocity is approximately the same as that of target electrons, a large number of electrons can be transferred to the proje… more
Date: July 24, 1989
Creator: Schlachter, A. S.; Stearns, J. W.; Berkner, K. H.; Bernstein, E. M.; Clark, M. W.; DuBois, R. D. et al.
Item Type: Refine your search to only Article
Partner: UNT Libraries Government Documents Department
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Search for Oscillation of the Electron-Capture Decay Probability of Pm-142

Description: We have searched for time modulation of the electron capture decay probability of 142Pm in an attempt to confirm a recent claim from a group at the Gesellschaft fur Schwerionenforschung (GSI). We produced 142Pm via the 124Sn(23Na, 5n)142Pm reaction at the Berkeley 88-Inch Cyclotron with a bombardment time short compared to the reported modulation period. Isotope selection by the Berkeley Gas-filled Separator is followed by implantation and a long period of monitoring the 142Nd K alpha x-rays fr… more
Date: July 3, 2008
Creator: Vetter, Paul A; Vetter, Paul; Clark, Roderick; Dvorak, Jan; Freedman, Stuart; Gregorich, Kenneth et al.
Item Type: Refine your search to only Article
Partner: UNT Libraries Government Documents Department
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Experimental study of interactions of highly charged ions with atoms at keV energies. Progress report, July 1, 1991--June 30, 1992

Description: This Progress Report describes the experimental work carried out, and the work in progress, at the Cornell EBIS Laboratory during the period 7/1/1991 to 6/30/1992. During this period, a number of experiments were carried out. The absolute values of the total, one, two and three electron transfer cross sections for highly charged argon ions (8{le}q{le}16) colliding with argon at 2.3 qkev laboratory energy were measured. The distribution of recoil ions and molecular fragments formed in highly cha… more
Date: July 5, 1992
Creator: Kostroun, V. O.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
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Minimum dipole moment required to bind an electron--molecular theorists rediscover phenomenon mentioned in Fermi--Teller paper on another subject twenty years earlier

Description: Work leading to the discovery of the minimum dipole moment for electron binding, D/sub min/ = 0.639 ea/sub 0/ (atomic units), by several groups in 1967-68 is described. It was subsequently learned that this number had been published in 1947 by Fermi and Teller, who did not, however, indicate how they derived it. The author has found a numerical solution in Fermi's notebooks from 1946-50 at the University of Chicago Library. Fermi's work is described and presented here with relevant material fro… more
Date: July 1, 1976
Creator: Turner, J. E.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
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Experimental study of interactions of highly charged ions with atoms at keV energies

Description: This Progress Report describes the experimental work carried out, and the work in progress, at the Cornell EBIS Laboratory during the period 7/1/1991 to 6/30/1992. During this period, a number of experiments were carried out. The absolute values of the total, one, two and three electron transfer cross sections for highly charged argon ions (8{le}q{le}16) colliding with argon at 2.3 qkev laboratory energy were measured. The distribution of recoil ions and molecular fragments formed in highly cha… more
Date: July 5, 1992
Creator: Kostroun, V. O.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
open access

Atomic data for fusion

Description: This report provides a handbook of recommended cross-section and rate-coefficient data for inelastic collisions between hydrogen, helium and lithium atoms, molecules and ions, and encompasses more than 400 different reactions of primary interest in fusion research. Published experimental and theoretical data have been collected and evaluated, and the recommended data are presented in tabular, graphical and parametrized form. Processes include excitation and spectral line emission, charge exchan… more
Date: July 1, 1990
Creator: Hunter, H. T.; Kirkpatrick, M. I.; Alvarez, I.; Cisneros, C.; Phaneuf, R. A. (eds.) & Barnett, C. F.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
open access

Metastable Enhancement of C[sup +] and O[sup +] Capture Reactions. [10 to 500 eV]

Description: The project is devoted to the study of charge transfer neutralization of Carbon and oxygen ions in H and H[sub 2] gases at energies from 10 to 500 eV. A major motivation was to provide cross section data to support analysis of edge plasmas in Tokamak Fusion devices. The first objective was to measure cross sections for metastable excited singly charged ions separately from the cross sections for ground state ions. Previously published values are confusing because the beams used included unknown… more
Date: July 31, 1992
Creator: Thomas, E.W.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
open access

Metastable Enhancement of C{sup +} and O{sup +} Capture Reactions. Final Report

Description: The project is devoted to the study of charge transfer neutralization of Carbon and oxygen ions in H and H{sub 2} gases at energies from 10 to 500 eV. A major motivation was to provide cross section data to support analysis of edge plasmas in Tokamak Fusion devices. The first objective was to measure cross sections for metastable excited singly charged ions separately from the cross sections for ground state ions. Previously published values are confusing because the beams used included unknown… more
Date: July 31, 1992
Creator: Thomas, E. W.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
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