Experimental study of charging of dust grains in the presence of energetic electrons

被引:4
|
作者
Paul, R. [1 ]
Sharma, G. [1 ]
Deka, K. [1 ]
Adhikari, S. [2 ]
Moulick, R. [1 ]
Kausik, S. S. [1 ]
Saikia, B. K. [1 ]
机构
[1] Ctr Plasma Phys, Inst Plasma Res, Kamrup 782402, Assam, India
[2] Univ Oslo, Dept Phys, POB 1048 Blindern, NO-0316 Oslo, Norway
关键词
dusty plasma; low temperature plasma; secondary electron emission; two-electron temperature; TUNGSTEN DUST; EMISSION; PLASMA; WAVES; PARTICLES;
D O I
10.1088/1361-6587/ac44e5
中图分类号
O35 [流体力学]; O53 [等离子体物理学];
学科分类号
070204 ; 080103 ; 080704 ;
摘要
The role of hot electrons in the charging of dust grains is investigated in a two temperature hydrogen plasma. A variety of dust particles are introduced into the system and secondary electron emission (SEE) from each of the dust types has been reported. A cylindrical Langmuir probe is used for determining the plasma parameters and a Faraday cup is connected to an electrometer in order to measure the dust current. The electrometer readings confirm the electron emission from the dust and SEE is observed from the tungsten dust in a low-pressure experimental plasma device for the first time.
引用
收藏
页数:9
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