COLLISIONLESS CURRENTS FOR CYLINDRIC PROBES IN A PLASMA WITH NON-MAXWELLIAN DISTRIBUTION OF THE ELECTRON-ENERGY

被引:16
|
作者
ROHMANN, J
KLAGGE, S
机构
[1] Department of Physics, E.‐M.‐Arndt‐Univeristy, Greifswald, O-2200
[2] Greifswald, O-2200
关键词
D O I
10.1002/ctpp.2150330205
中图分类号
O35 [流体力学]; O53 [等离子体物理学];
学科分类号
070204 ; 080103 ; 080704 ;
摘要
The radial model developed by ALLEN, BOYD, REYNOLDs and CHEN [1, 2] for the ion collection of Langmuir probes is extended to describe the case of a non-Maxwellian distribution of the electron energy. Assuming standard distributions, showing with respect to the Maxwell distribution an increasing deficite of fast electrons as the parameter k of the distribution increases, the electron-retarded current characteristic, the potential distribution and the density profiles for electrons and ions in the probe sheath, ion-current characteristics as well as graphs for the ion-density determination are calculated for different k. It is shown, that the application of the Chen model (k = 1) in plasma with k > 1 leads only to a small error in the ion-density measurement.
引用
收藏
页码:111 / 123
页数:13
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