两种温度电子对稳态等离子体鞘层的影响

计算物理 ›› 2013, Vol. 30 ›› Issue (5): 733-738.

两种温度电子对稳态等离子体鞘层的影响

赵晓云, 张开银, 张丙开, 李世刚

阜阳师范学院物理与电子科学学院, 阜阳 236037

收稿日期:2012-12-23 修回日期:2013-04-15 出版日期:2013-09-25 发布日期:2013-09-25
作者简介:赵晓云(1977-),男,安徽无为,讲师,硕士,主要从事等离子体鞘层的理论研究,E-mail:fuyangzxy77@163.com
基金资助:
国家自然科学基金(51271059、11273008);安徽省高等学校优秀青年人才基金(2012SQRL116);安徽省高等学校省级自然科学基金(KJ2012Z305)资助项目

Effects of Two-temperature Electrons on Sheath of Stationary Plasma

ZHAO Xiaoyun, ZHANG Kaiyin, ZHANG Bingkai, LI Shigang

School of Physics and Electronics, Fuyang Teachers College, Fuyang 236037, China

Received:2012-12-23 Revised:2013-04-15 Online:2013-09-25 Published:2013-09-25

摘要/Abstract

摘要： 建立包含冷热电子的无碰撞等离子体鞘层的流体模型,利用数值模拟研究含有两种温度电子时等离子体鞘层的产生.结果表明:对于含有两种不同温度电子的稳态等离子体,冷电子的温度越低或者冷电子的含量越多,鞘边离子的马赫数临界值就越小,鞘层的宽度就变得越窄,沉积器壁的离子动能流也就越少.此外,研究不同种类的等离子体(Ar、Ke、Xe),鞘层厚度和离子沉积器壁动能流受冷电子的影响.

关键词: 等离子体鞘层, 等离子体模拟, 马赫数, 动能流

Abstract: A fluid model including two-temperature electrons was constructed for a collisionless plasma sheath. Effects of two-temperature electrons on sheath of stationary plasma were simulated. It is found that as temperature of cold electron is lower or density of cold electron at sheath adge is smaller critical ion Mach number decreases, sheath width becomes narrow and ion energy flow deposited on wall reduces. In addition, it is discussed that sheath thickness and ion energy flow deposited on wall are affected by cold electron in different plasma species.

Key words: plasma sheath, plasma simulation, Mach number, energy flow

中图分类号:

O531

赵晓云, 张开银, 张丙开, 李世刚. 两种温度电子对稳态等离子体鞘层的影响[J]. 计算物理, 2013, 30(5): 733-738.

ZHAO Xiaoyun, ZHANG Kaiyin, ZHANG Bingkai, LI Shigang. Effects of Two-temperature Electrons on Sheath of Stationary Plasma[J]. CHINESE JOURNAL OF COMPUTATIONAL PHYSICS, 2013, 30(5): 733-738.

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