Observation of collisionless inward propagation of electrons into helical vacuum magnetic surfaces via stochastic magnetic fields
Observation of collisionless inward propagation of electrons into helical vacuum magnetic surfaces via stochastic magnetic fields
复制标题
通过随机磁场观察电子向螺旋真空磁表面的无碰撞向内传播
DOI：
10.1063/1.1635823
复制
发表时间：
2004
影响因子：
2.2
通讯作者：
H. Yamada
中科院分区：
文献类型：
--
作者：
H. Himura;H. Wakabayashi;M. Fukao;Z. Yoshida;M. Isobe;S. Okamura;C. Suzuki;S. Nishimura;K. Matsuoka;K. Toi;H. Yamada
电子被注入仿星器真空位形的随机磁区（SMR）。值得注意的是，当SMR存在时，SMR中的一些场跟随电子向内移动穿过最后闭合的通量表面。这种向内传播发生在无碰撞过程中，但在SMR丢失的情况下从未观察到，SMR中的电子密度也不小。这表明存在交叉场传输，这是与自由流的电子沿着随机游走场线在SMR。
Electrons are injected into a stochastic magnetic region (SMR) of a stellarator vacuum configuration. Remarkably, when the SMR is present, some field-following electrons in the SMR move inwardly across the last closed flux surface. This inward propagation occurs in a collisionless process, but it is never observed for cases where the SMR is lost, nor is the electron density small in the SMR. These suggest the existence of cross-field transport that is associated with free-streaming of electrons along the stochastically wandering field lines in the SMR.