Sheath criterion and boundary conditions for an electrostatic sheath
Sheath criterion and boundary conditions for an electrostatic sheath
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静电护套的护套准则和边界条件
DOI：
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发表时间：
1998
期刊：
影响因子：
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通讯作者：
X. Chen
中科院分区：
文献类型：
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作者：
X. Chen
The effect of collisionality of ions on the formation of a positive sheath is investigated using a two-fluid model. It is the definition of the sheath edge that determines the sheath criterion. Bohm’s sheath criterion is based on the collisionless sheath and a quasineutral presheath. When collisions of ions in the sheath or finite space charge of presheath are taken into account, a sheath criterion can also be obtained based on the boundary conditions chosen at the sheath edge.
