Spontaneous formation of closed-field torus equilibrium via current jump observed in an electron-cyclotron-heated plasma.
Spontaneous formation of closed-field torus equilibrium via current jump observed in an electron-cyclotron-heated plasma.
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DOI：
10.1103/physrevlett.96.125005
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发表时间：
2006-03
影响因子：
8.6
通讯作者：
T. Yoshinaga;M. Uchida;H. Tanaka;T. Maekawa
中科院分区：
文献类型：
--
作者：
T. Yoshinaga;M. Uchida;H. Tanaka;T. Maekawa
Spontaneous current jump resulting in the formation of closed field equilibrium has been observed in electron-cyclotron-heated toroidal plasmas under steady external fields composed of a toroidal field and a relatively weak vertical field in the low aspect ratio torus experiment device. This bridges the gap between the open field equilibrium maintained by a pressure-driven current in the external field and the closed field equilibrium at a larger current. Experimental results and theoretical analyses suggest a current jump model that is based on the asymmetric electron confinement along the field line appearing upon simultaneous transitions of field topology and equilibrium.
