Plasma中离子鞘层产生原理以及鞘层内离子行为 - 知乎
Plasma是部分离子化的导电气体，整体呈电中性，因此宏观看，在plasma内是等电位，离子在plasma中朝着散乱的方向运动。 Plasma所持有的电位称为电浆电位（Plasma Potential） V_{p} 。
Plasma 基本概念 （3）DC Sheath 和RF Sheath - 知乎 - 知乎专栏
Cathode sheath . Bulk plasma内的离子从无规则运动状态到进入sheath区域加速运动需要一定的速度，即bohm 速度（Bohm velocity， 由David Bohm 计算出）。为了获得Bohm 速度，离子需要从外部获得能量。在DC 放电里，只有外部电场来提供能量。
The sheath model was used to investigate the ion energy and flux on the electrodes of plasma reactors. The dimensionless quantity Co (collision number) was found to be important in
Understanding the dynamics of the sheath formed over a radio frequency ~rf! powered electrode immersed in a plasma is important from both the fundamental and practical points of view.
plasma sheath (low voltage DC sheath approximation) An electrode or wall in contact with a plasma will usu-ally affect only its immediate surroundings in a plasma. Unless large currents flow in the plasma, or unless it is highly turbulent, a plasma will tend to form a surface sheath to shield itself from applied electric fields. The
We emphasize the distinction in the potential structure between the quasi-neutral plasma, a quasi-neutral col lisional pre-sheath and the non-neutral sheath. Very quickly, on the order of the inverse of the plasma frequency, the potential and number distributions reach an equilibrium as the current densities of electrons and ions become equal.
Kinetic Simulation of Plasma Sheath Relevant to Cross-Field Diodes ...
Kinetic Simulation of Plasma Sheath Relevant to Cross-Field Diodes Abstract: It is critical to understand the formation and propagation of plasma near electrodes to improve the performance of cross-field devices, such as high-power microwaves.
Sheath Structure in a Plasma Diode - AIP Publishing
1970年4月1日 · The plasma diode is proposed as a vehicle for testing theories on sheath structure with collisions. A kinetic theory model of the plasma‐sheath transition is used to analyze the operation of the diode.
Sheath Structure in a Plasma Diode | Semantic Scholar
The plasma diode is proposed as a vehicle for testing theories on sheath structure with collisions. A kinetic theory model of the plasma‐sheath transition is used to analyze the operation of the diode.
PLASMA-SHEATH DIODE. - Semantic Scholar
Abstract : Microwave nonlinear effects were observed in the plasma sheath surrounding a probe. Results were obtained for a PIG discharge operating at 1.0 to .02 torr xenon. The nonlinear effects include mixing, harmonic generation, and current rectification.