MAGNETOHYDRODYNAMIC COMPUTATION OF FEEDBACK OF RESISTIVE SHELL INSTABILITIES IN THE REVERSED FIELD PINCH

被引：9
|
作者：
ZITA, EJ
PRAGER, SC
HO, YL
SCHNACK, DD
机构：
[1] UNIV WISCONSIN, MADISON, WI 53706 USA
[2] SCI APPLICAT INT CORP, SAN DIEGO, CA USA
来源：
NUCLEAR FUSION | 1992年 / 32卷 / 11期
关键词：
D O I：
10.1088/0029-5515/32/11/I06
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：
Magnetohydrodynamic computation demonstrates that feedback can sustain reversal and reduce the loop voltage in resistive shell reversed field pinch (RFP) plasmas. Edge feedback on approximately 2R/a tearing modes resonant near the axis is found to restore plasma parameters to nearly their levels obtained with a close fitting conducting shell. When original dynamo modes are stabilized, neighbouring tearing modes grow to maintain the RFP dynamo more efficiently. This suggests that the experimentally observed limits on RFP pulse lengths to the order of the shell time can be overcome by applying feedback to a few helical modes.
引用
收藏
页码：1941 / 1950
页数：10
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