K x rays Produced in Collisions of Bare Ions with Atoms: Contribution of Multiple-Electron Transfer in Kr36+, Ar18+, and Ne10++Ar Collisions

Published

January 1, 2006

Author(s)

H Tawara

Abstract

K x rays have been observed in low energy collisions of bare Kr, Ar, and Ne ions with a neutral gas target.Although largely neglected previously, we have found that multiple-electron transfer processes play a signifi-cant role in shaping the x-ray spectra. The observed ratios of normal-satellite to hyper-satellite line intensitiesare found to be roughly independent of the ion species and much larger than those estimated from previouslyreported electron transfer cross sections, suggesting that there may be a strong correlation between two electronsduring the electron transfer or during the subsequent cascades. It is suggested that exact knowledge of theinitial and final principal and angular momentum quantum numbers n, l in electron transfer are the mostessential missing ingredients for understanding the entire x-ray emission process in astrophysical, laboratory,and technological plasmas.

Citation

Physical Review A (Atomic, Molecular and Optical Physics)

Volume

73

Pub Type

Journals

Citation

Tawara, H. (2006), K x rays Produced in Collisions of Bare Ions with Atoms: Contribution of Multiple-Electron Transfer in Kr36+, Ar18+, and Ne10++Ar Collisions, Physical Review A (Atomic, Molecular and Optical Physics) (Accessed November 3, 2025)