Effects of neutral gas collisions and an expanding magnetic field on plasma flow in a divertor chamber

被引：0
|
作者：
Sato, K
Kameda, S
Katayama, H
Miyawaki, F
机构：
[1] Himeji Institute of Technology, Himeji, Hyogo 671-22
来源：
CONTRIBUTIONS TO PLASMA PHYSICS | 1996年 / 36卷 / 2-3期
关键词：
D O I：
10.1002/ctpp.2150360247
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：
A divertor plasma is treated using a kinetic model to evaluate impurity control effects of an expanding magnetic field and effects of plasma-neutral collisions on power transmission in a divertor chamber. Cold ions of fuel and ionized impurities are effectively trapped in the divertor chamber by the electrostatic potential caused by magnetic expansion if the ionization rate is smaller than an upper limit. Plasma-neutral collisions remarkably reduce the impact energy of ions reaching the divertor plates through removal of energetic ions and through reduction of the potential drop in the divertor chamber.
引用
收藏
页码：355 / 360
页数：6
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