Spatial structure of particle-orbit loss regions in l=2 helical systems
Spatial structure of particle-orbit loss regions in l=2 helical systems
复制标题
l=2 螺旋系统中粒子轨道损失区域的空间结构
DOI：
10.1063/1.859436
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发表时间：
1990
期刊：
影响因子：
--
通讯作者：
T. Kamimura
中科院分区：
文献类型：
--
作者：
H. Sanuki;J. Todoroki;T. Kamimura
基于绝热不变量和引导中心漂移方程，研究了位形和速度空间中的粒子轨道和损失区域。螺旋角大半径平面（χ0-ρ）中的损失区域的边界由螺旋捕获和过渡粒子的漂移表面是否撞击限制器的条件确定。在χ0-ρ平面上得到两个典型的损耗边界。一个是确定没有粒子丢失的绝对约束的边界。另一个给出了v_∞ =0时深俘获粒子的约束区的边界。描述后者的边界的解析形式也来自。涟漪调制和静电势对这些损失边界的影响进行了讨论，以改善粒子约束。
Particle orbits and loss regions in both configuration and velocity spaces are studied on the basis of adiabatic invariants and guiding‐center drift equations. The boundary of the loss region in the pitch angle major radius plane (χ0‐ρ) is determined from the condition of whether the drift surfaces for helically trapped and transition particles hit the limiter or not. Two typical loss boundaries on the χ0‐ρ plane are obtained. One determines the boundary of absolute confinement where no particles are lost. The other gives the boundary of the confined region of deeply trapped particles with v∥=0. An analytical form describing the latter boundary is also derived. Effects of ripple modulation and electrostatic potential on these loss boundaries are discussed for the improvement of particle confinement.
影响因子：
3.3
作者：
A. Gibson;T. Sekiguchi;K. Lackner;S. Bodner;R. Hancox
通讯作者：
A. Gibson;T. Sekiguchi;K. Lackner;S. Bodner;R. Hancox