New mode of operating a magnetized coaxial plasma gun for injecting magnetic helicity into a spheromak

被引：36
|
作者：
Woodruff, S [1 ]
Hill, DN [1 ]
Stallard, BW [1 ]
Bulmer, R [1 ]
Cohen, B [1 ]
Holcomb, CT [1 ]
Hooper, EB [1 ]
McLean, HS [1 ]
Moller, J [1 ]
Wood, RD [1 ]
机构：
[1] Lawrence Livermore Natl Lab, Livermore, CA 94550 USA
来源：
PHYSICAL REVIEW LETTERS | 2003年 / 90卷 / 09期
关键词：
D O I：
10.1103/PhysRevLett.90.095001
中图分类号：
O4 [物理学];
学科分类号：
0702 ;
摘要：
By operating a magnetized coaxial plasma gun continuously with just sufficient current to enable plasma ejection, large gun-voltage spikes (similar to1 kV) are produced, giving the highest sustained voltage similar to500 V and highest sustained helicity injection rate observed in the Sustained Spheromak Physics Experiment. The spheromak magnetic field increases monotonically with time, exhibiting the lowest fluctuation levels observed during formation of any spheromak ((B) over tilde /Bgreater than or equal to2%). The results suggest an important mechanism for field generation by helicity injection, namely, the merging of helicity-carrying filaments.
引用
收藏
页码：1 / 095001
页数：4
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