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

Published online by Cambridge University Press:  15 March 2011

C. Deutsch ,
D. Leger  and
B. Tashev
C. Deutsch*
Affiliation:
Université Paris-Sud, LPGP (UMR-CNRS 8578), Orsay, France
D. Leger
Affiliation:
Université Valenciennes-Hainaut Cambresis, Lab., Monthouy, France
B. Tashev
Affiliation:
Kazakh National University, Department of Physics, Almaty, Kazakhstan
*
Address correspondence and reprint requests to: C. Deutsch, Université Paris-Sud, LPGP (UMR-CNRS 8578)Bât. 210, F-91405 Orsay, France. E-mail: claude.deutsch@pgp.u-psud.fr
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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.

Keywords

Critical de-mixingBinary ionic mixturesLow velocity ion stopping
Type
Research Article
Information
Laser and Particle Beams , Volume 29 , Issue 1 , March 2011 , pp. 121 - 124
Copyright
Copyright © Cambridge University Press 2011

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