New mode of operating a magnetized coaxial plasma gun for injecting magnetic helicity into a spheromak |
| |
| Authors: | Woodruff S Hill D N Stallard B W Bulmer R Cohen B Holcomb C T Hooper E B McLean H S Moller J Wood R D |
| |
| Institution: | Lawrence Livermore National Laboratory, Livermore, California 94550, USA. |
| |
| Abstract: | By operating a magnetized coaxial plasma gun continuously with just sufficient current to enable plasma ejection, large gun-voltage spikes (approximately 1 kV) are produced, giving the highest sustained voltage approximately 500 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/B>/=2%). The results suggest an important mechanism for field generation by helicity injection, namely, the merging of helicity-carrying filaments. |
| |
| Keywords: | |
| 本文献已被 PubMed 等数据库收录！ |
|
