Sheet Plasma Produced by Hollow Cathode Discharge

张龙; 张厚先; 杨宣宗; 冯春华; 乔宾; 王龙

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Sheet Plasma Produced by Hollow Cathode Discharge

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摘要

A sheet plasma is produced by a hollow cathode discharge under an axial magnetic field.The plasma is about 40cm in length,4 cm in width and 1cm in thickness.The electron density is about 108cm-3.The hollow cathode is made to be shallow with a large opening,which is different from the ordinary deep hollow cathode.A Langmuir probe is used to detect the plasma.The electron density and the spatial distribution of the plasma change when voltage,pressure and the magnetic field vary.A peak and a data fluctuation at about 200 G-300 G are observed in the variation of electron density(or thickness of the sheet plasma)with the magnetic field.Our work will be helpful in characterizing the sheet plasma and will make the production of dense sheet plasma more controllable.

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来源
《中国物理快报：英文版》 |2003年第11期|1984-1987|共4页
作者
张龙; 张厚先; 杨宣宗; 冯春华; 乔宾; 王龙;
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作者单位

Institute of Physics,Chinese Academy of Sciences,Beijing 100080;

Institute of Physics,Chinese Academy of Sciences,Beijing 100080;

Institute of Physics,Chinese Academy of Sciences,Beijing 100080;

Institute of Physics,Chinese Academy of Sciences,Beijing 100080;

Institute of Physics,Chinese Academy of Sciences,Beijing 100080;

Institute of Physics,Chinese Academy of Sciences,Beijing 100080;

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Sheet Plasma Produced by Hollow Cathode Discharge

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