Low velocity ion slowing down in a de-mixing binary ionic mixture

C. Deutsch, D. Léger, Bekbolat Tashev

2011

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DOI 10.1017/s0263034611000061
Data confidence 70 medium
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Abstract

Abstract We consider ion projectile slowing down at low velocity Vp < Vthe, target thermal electron velocity, in a strongly coupled and de-mixing H-He ionic mixture. It is investigated in terms of quasi-static and critical charge-charge structure factors. Non-polarizable as well as polarizable partially degenerate electron backgrounds are given attention. The low velocity ion slowing down turns negative in the presence of long wavelength and low frequency hydromodes, signaling a critical de-mixing. This process documents an energy transfer from target ion plasma to the incoming ion projectile.