There is no such thing as a collisionally modified Bohm criterion

被引：76

作者：

Franklin, RN ^{[1
]}

机构：

[1] Open Univ, Oxford Res Unit, Oxford OX1 5HR, England

来源：

JOURNAL OF PHYSICS D-APPLIED PHYSICS | 2003年 / 36卷 / 22期

关键词：

D O I：

10.1088/0022-3727/36/22/008

中图分类号：

O59 [应用物理学];

学科分类号：

摘要：

The conventional equations describing plasma and sheath are examined over a full range of collisionality to determine the influence of collisionality on the ion equation of motion-that is, when the ion motion is essentially inertial and when it is collisional. When it is inertial in the sheath the Bohm criterion has been satisfied, while when the sheath is collisional the ions remain in equilibrium with the field all the way to the wall.

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页码：2821 / 2824

页数：4

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