Charge and Levitation of Grains in Plasma Sheath with Dust Thermic Emission |
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Authors: | WU Hai-Cheng XIE Bai-Song |
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Affiliation: | The Key Laboratory of Beam Technology and Materials Modification of Ministry of Education, Beijing Normal University, Beijing 100875, China Institute of Low Energy Nuclear Physics, Beijing Normal University, Beijing 100875, China |
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Abstract: | By taking into account thermic emission current from hot dust surface, the problem involved in dust charging and levitation of dust grains in plasma sheath has been researched. The results are compared to that without including thermal emission current while the system parameters are same. It is found that the thermal emission current has played a significant role on modifying the dust charging and balance levitations. Both of the charging numbers of dust and the dust radius in balance are dramatically reduced. The stability of dust levitation is also analyzed and discussed. |
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Keywords: | dusty plasmas thermal radiation |
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