Dust charge distribution in complex plasma afterglow

被引：23

作者：

Couedel, L. ^{[1
,2
]}

Samarian, A. A. ^{[1
]}

Mikikian, M. ^{[2
]}

Boufendi, L. ^{[2
]}

机构：

[1] Univ Sydney, Sch Phys A28, Sydney, NSW 2006, Australia

[2] Univ Orleans, CNRS, GREMI, F-45067 Orleans 2, France

来源：

EPL | 2008年 / 84卷 / 03期

关键词：

D O I：

10.1209/0295-5075/84/35002

中图分类号：

O4 [物理学];

学科分类号：

0702 ;

摘要：

Dust charge distributions have been measured for the first time in a complex plasma. Experiments were performed late in a discharge afterglow. Residual charges of few hundred particles have been determined. It was found that the mean residual charge is negative but the tail of the distribution extends into the positive-charge region. The experiments were complemented by numerical simulations taking into account discreteness of the charging process and dependence of plasma parameters on the transition from ambipolar to free diffusion. It is shown that the existence of positively charged particles can be explained by the broadening of the dust charge distribution in the late complex plasma afterglow. Copyright (C) EPLA, 2008

引用

页数：5

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