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Electron Transfer Experiments and Atomic Magnetism Values. Progress Report, February 1, 1975--September 30, 1975

Description: Progress in the first seven months of this new research is described. A new apparatus was constructed, tested and moved to Oak Ridge National Laboratory for studies using the Penning ion source test facility. Preliminary electron transfer cross section results for N$sup 4+$, N$sup 5+$, He$sup 2+$ and C$sup 5+$ ions on gases were obtained. Energy loss measurements made to date support expectations that single electron transfer for multiply-charged ions colliding with gas atoms produces excited f… more
Date: October 1, 1975
Creator: Bayfield, J. E. & Hughes, V. W.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
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Dynamics of nonreactive inelastic ion--molecule collisions

Description: Thesis. A tandem electrostatic energy analyzer molecular beam apparatus was built for studying low energy inelastic 180 deg scattering of alkali ions from molecules. A beam of essentially monoenergetic ions is produced by a first analyzer and is focused on the center of a scattering cell containing essentially stationary molecules. Ions which are not significantly deflected in their laboratory motion after collisions with the molecules are energy analyzed with a second analyzer.'Ine scattered b… more
Date: August 1, 1973
Creator: Dimpfl, W. L.
Item Type: Refine your search to only Thesis or Dissertation
Partner: UNT Libraries Government Documents Department
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Ion-Molecule Reactions

Description: Introduction: The present report is a critical review of the present knowledge and theory of ion-molecule reactions, especially as they may apply to high-level radiation processing.
Date: October 1959
Creator: Rosenstock, H. M.; Mueller, C. R.; Wallenstein, M. B.; Vestal, Marvin L.; Tory, Audrey; Rivers, Diana et al.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
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Vibrational inelasticity in H$sub 2$ collisions with He and Li$sup +$

Description: The partially averaged version of classical S-matrix theory was applied to three-dimensional collisions of H$sub 2$ with He and Li$sup +$. For H$sub 2$- Li$sup +$, cross-sections for the de-excitation of H$sub 2$ from (n$sub 1$,j$sub 1$) = (1,0) to the ground vibrational manifold were computed at a total energy of 1.2 eV and compared to previously done coupled channel calculations of Schaefer and Lester. The agreement is very good. For H$sub 2$-He, the Kutzelnigg- Tsapline interaction potential… more
Date: September 1, 1975
Creator: Raczkowski, A.W.
Item Type: Refine your search to only Thesis or Dissertation
Partner: UNT Libraries Government Documents Department
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Theoretical atomic collision physics. Final report, July 1, 1987-- June 30, 1995

Description: This is the final report of research activities supported by the most recent grant to the theoretical atomic collision physics program at Rice University. For this most recent 3-year grant, the focus has been the study of excitation and charge-transfer in atom-atom and ion-atom collisions. Emphasis has been placed on low-velocity collision processes involving initially excited atoms, including ``low Rydberg`` atoms. Two particular objectives of this research were to examine the dependence of st… more
Date: December 1, 1995
Creator: Walters, G.K.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
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Excitation of atoms and molecules in collisions with highly charged ions. Final report, July 1, 1978--June 30, 1994

Description: This report summarizes progress in research supported by DOE Grant DE-FG05-84ER13262 during the period July 1, 1978 to June 30, 1994. Contained herein are a summary of the final year`s work, the names of students and postdoctoral associates who have participated in work performed under this grant, and a list of publications which evolved from completed projects.
Date: May 1, 1998
Creator: Watson, R.L.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
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Negative ion beam processes

Description: Los Alamos Scientific Laboratory fiscal year 1975 work on production of intense, very bright, negative hydrogen (H$sup -$), ion beams and conversion of a high-energy (a few hundred MeV) negative beam into a neutral beam are described. The ion source work has used a cesium charge exchange source that has produced H$sup -$ ion beams greater than or equal to 10 mA (about a factor of 10 greater than those available 1 yr ago) with a brightness of 1.4 x 10$sup 9$ A/m$sup 2$- rad$sup 2$ (about 18 time… more
Date: June 1, 1975
Creator: Hayward, T. D.; Lawrence, G. P.; Bentley, R. F.; Malanify, J. J. & Jackson, J. A.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
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Measurement of charge exchange cross sections for highly charged xenon and thorium ions with molecular hydrogen in a Penning Ion Trap

Description: Highly charged xenon (35+ to 46+) and thorium (72+ to 79+) ions were produced in an Electron Beam Ion Trap (EBIT). The ions were extracted from EBIT in a short pulse. Ions of one charge state were selected using an electromagnet. The ions were recaptured at low energy in a cryogenic Penning trap (RETRAP). As the ions captured electrons from molecular hydrogen, populations of the various charge states were obtained by measuring the image currents induced by the ions on the electrodes of the trap… more
Date: December 1, 1995
Creator: Weinberg, G.M.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
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Final Technical Report

Description: This document comprises the final technical report for atomic collisions research supported by DOE grant No. DE-FG02-87ER13778 from September 1, 2001 through August 31, 2004. The research involved the experimental investigation of excitation and charge-changing processes occurring in ion-atom and ion-molecule collisions. Major emphases of the study were: (1) interference effects resulting from coherent electron emission in H2, (2) production of doubly vacant K-shell (hollow ion) states due to e… more
Date: November 25, 2005
Creator: Tanis, John
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
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Double and single ionization of He and H{sub 2} by slow protons and antiprotons

Description: Double and single ionization of He and H{sub 2} by proton (p) and antiproton ({bar p})impact in the energy region below 50 keV was studied theoretically by using the semiclassical molecular picture. As the energy decreased, the ratio of the double- to the single-ionization cross section increased for impact and decreased for p impact for both He and H{sub 2}. These trends are consistent with recent measurements for He. Ionization mechanisms differ distinctly for p impact and {bar p} impact. For… more
Date: December 31, 1994
Creator: Kimura, Mineo; Shimamura, Isao & Inokuti, Mitio
Item Type: Refine your search to only Article
Partner: UNT Libraries Government Documents Department
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Atomic physics with highly charged ions. Progress report for FY 1995

Description: This report describes progress made during the previous year in experimental and theoretical investigations of high- and low-energy collisions involving multiply charged ions. The work from previous years has resulted in publication of 27 papers in refereed journals during the last twelve months. This report includes a list of published manuscripts as well as lists of abstracts for five different conferences/workshops during the grant period.
Date: September 1995
Creator: Richard, Patrick
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
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Applying ion-molecule reactions to studies of gas-phase protein structure

Description: Whether solution phase differences in protein higher order structure persist in the gas phase, is examined by means of proton transfer reactions on ions generated by electrospray ionization of different solution conformations. Ion-molecule reactions were carried out in the atmosphere-vacuum interface of a quadrupole mass spectrometer with a Y-shaped capillary inlet-reactor. An amine (dimethyl-, trimethyl-, or diethyl-) were delivered to one inlet arm. Reactivities of bovine cytochrome c ions sp… more
Date: June 1, 1992
Creator: Ogorzalek Loo, R. R.; Loo, J. A. & Smith, R. D.
Item Type: Refine your search to only Article
Partner: UNT Libraries Government Documents Department
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Excitation of atoms and molecules in collisions with highly charged ions. Progress report, January 1, 1991--March 1, 1992

Description: This report discusses research of multicharged nitrogen, oxygen and carbon monoxide molecular ions produced with collision with multicharged argon ions. Properties like ionization, dissociation, and excitation are investigated. (LSP)
Date: March 1, 1992
Creator: Watson, R. L.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
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