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Title: Double- and single-electron transfer in H{sup +}+K collisions from 0.3 to 4keV: Separation of direct double transfer and two-step successive single-electron transfer

Abstract

Double-electron transfer and two-step single-electron transfer in collisions of proton with potassium-metal target are measured in the collision energy from 0.3 to 4 keV by using a charge-inversion mass spectrometry. Two prominent H{sup -} ion peaks are observed with different values of the energy loss and show different target density dependences. The peak with larger energy loss is identified as double-electron transfer and the other as two-step successive single-electron transfer from the analysis of the target density dependence. The two-step single-electron transfer is considered to occur as the process accompanying spontaneous Ly-{alpha} emission, followed by negative H{sup -} formation. A theoretical analysis is also carried out, and the single-electron transfer cross section obtained is found to be in excellent agreement with the present measurement, while the present measurement for double-electron transfer is found to be much smaller than those evaluated earlier and the present theory.

Authors:
; ; ;  [1]
  1. College of Integrated Arts and Sciences, Osaka Prefecture University, Gakuen-cho 1-1, Sakai, Osaka, 599-8531 (Japan)
Publication Date:
OSTI Identifier:
20645898
Resource Type:
Journal Article
Journal Name:
Physical Review. A
Additional Journal Information:
Journal Volume: 70; Journal Issue: 2; Other Information: DOI: 10.1103/PhysRevA.70.022708; (c) 2004 The American Physical Society; Country of input: International Atomic Energy Agency (IAEA); Journal ID: ISSN 1050-2947
Country of Publication:
United States
Language:
English
Subject:
74 ATOMIC AND MOLECULAR PHYSICS; CHARGE EXCHANGE; CROSS SECTIONS; DENSITY; ELECTRON TRANSFER; EMISSION; ENERGY LOSSES; HYDROGEN IONS 1 MINUS; HYDROGEN IONS 1 PLUS; ION-ATOM COLLISIONS; KEV RANGE; MASS SPECTRA; MASS SPECTROSCOPY; POTASSIUM; PROTONS

Citation Formats

Hayakawa, Shigeo, Kadomura, Kazunori, Kimura, Mineo, Dutta, C M, Graduate School of Sciences, Kyushu University, Hakozaki, Fukuoka 812-8581, and Department of Physics, Rice University, Houston, Texas 77501. Double- and single-electron transfer in H{sup +}+K collisions from 0.3 to 4keV: Separation of direct double transfer and two-step successive single-electron transfer. United States: N. p., 2004. Web. doi:10.1103/PhysRevA.70.022708.
Hayakawa, Shigeo, Kadomura, Kazunori, Kimura, Mineo, Dutta, C M, Graduate School of Sciences, Kyushu University, Hakozaki, Fukuoka 812-8581, & Department of Physics, Rice University, Houston, Texas 77501. Double- and single-electron transfer in H{sup +}+K collisions from 0.3 to 4keV: Separation of direct double transfer and two-step successive single-electron transfer. United States. https://doi.org/10.1103/PhysRevA.70.022708
Hayakawa, Shigeo, Kadomura, Kazunori, Kimura, Mineo, Dutta, C M, Graduate School of Sciences, Kyushu University, Hakozaki, Fukuoka 812-8581, and Department of Physics, Rice University, Houston, Texas 77501. 2004. "Double- and single-electron transfer in H{sup +}+K collisions from 0.3 to 4keV: Separation of direct double transfer and two-step successive single-electron transfer". United States. https://doi.org/10.1103/PhysRevA.70.022708.
@article{osti_20645898,
title = {Double- and single-electron transfer in H{sup +}+K collisions from 0.3 to 4keV: Separation of direct double transfer and two-step successive single-electron transfer},
author = {Hayakawa, Shigeo and Kadomura, Kazunori and Kimura, Mineo and Dutta, C M and Graduate School of Sciences, Kyushu University, Hakozaki, Fukuoka 812-8581 and Department of Physics, Rice University, Houston, Texas 77501},
abstractNote = {Double-electron transfer and two-step single-electron transfer in collisions of proton with potassium-metal target are measured in the collision energy from 0.3 to 4 keV by using a charge-inversion mass spectrometry. Two prominent H{sup -} ion peaks are observed with different values of the energy loss and show different target density dependences. The peak with larger energy loss is identified as double-electron transfer and the other as two-step successive single-electron transfer from the analysis of the target density dependence. The two-step single-electron transfer is considered to occur as the process accompanying spontaneous Ly-{alpha} emission, followed by negative H{sup -} formation. A theoretical analysis is also carried out, and the single-electron transfer cross section obtained is found to be in excellent agreement with the present measurement, while the present measurement for double-electron transfer is found to be much smaller than those evaluated earlier and the present theory.},
doi = {10.1103/PhysRevA.70.022708},
url = {https://www.osti.gov/biblio/20645898}, journal = {Physical Review. A},
issn = {1050-2947},
number = 2,
volume = 70,
place = {United States},
year = {Sun Aug 01 00:00:00 EDT 2004},
month = {Sun Aug 01 00:00:00 EDT 2004}
}