Dust grains in plasma with Coulomb collisions

被引:4
|
作者
Leonov, AG
Pal', AF
Starostin, AN
Filippov, AV
机构
[1] Moscow Inst Phys & Technol, Dolgoprudnyi 141700, Moscow Region, Russia
[2] State Sci Ctr Troitsk Inst Innovat & Fus Res, Troitsk 142190, Moscow Region, Russia
关键词
52.27.Lw; 52.25.Vy;
D O I
10.1134/1.1591974
中图分类号
O4 [物理学];
学科分类号
0702 ;
摘要
Dust-grain charging in a dense plasma with electron and ion concentration up to 10(16) cm(-3), where the electron transport cross section is dominated by Coulomb collisions, was investigated. It was established that the charge of an isolated dust grain increases with electron concentration, whereas its potential is almost constant in the range 10(14)-10(16) cm(-3) of electron concentrations studied. It is shown that the self-consistent electric-field potential at moderate and large distances from the dust grain is well approximated by the Debye expression, but the screening radius is appreciably larger than even the electron Debye radius. The region of parameters of a dense photoresonance sodium plasma, where the dust-grain ensemble may crystallize, was established. (C) 2003 MAIK "Nauka / Interperiodica".
引用
收藏
页码:482 / 485
页数:4
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