[Table of Contents]

Plasma and Fusion Research

Volume 8, 2401100 (2013)

Regular Articles


Isotope Effect on Charge Transfer Cross Sections of Slow 7Li+ Ions in Collisions with H2, HD, and D2 Molecules
Toshio KUSAKABE, Hiroyuki TAWARA1) and Hiroyuki A. SAKAUE1)
Kinki University, 3-4-1 Kowakae, Higashi-Osaka 577-8502, Japan
1)
National Institute for Fusion Science, 322-6 Oroshi-cho, Toki 509-5292, Japan
(Received 22 November 2012 / Accepted 2 April 2013 / Published 26 September 2013)

Abstract

Charge transfer cross sections of 7Li+ ions in collisions with H2, HD, and D2 molecules have been measured in the energy range from 1.4 to 4.0 keV using the growth rate method. Significant differences in the charge transfer cross sections between collisions of 7Li+ ions with H2 and HD, and with H2 and D2 molecules, the so-called target isotope effect, are observed at collision energies from 1.4 to 2.4 keV. The observed charge transfer cross section ratios of σ (HD)/σ (H2) and σ (D2)/σ (H2) are found to be approximately 0.7 at 1.4 keV. They are gradually increasing, and finally approaching unity at energies above 2.4 keV.


Keywords

singly charged lithium ion, hydrogen molecule, charge transfer cross section, isotope effect, growth rate method, plasma diagnostics

DOI: 10.1585/pfr.8.2401100


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This paper may be cited as follows:

Toshio KUSAKABE, Hiroyuki TAWARA and Hiroyuki A. SAKAUE, Plasma Fusion Res. 8, 2401100 (2013).