The second adiabatic invariant and neoclassical transport in stellarators
The second adiabatic invariant and neoclassical transport in stellarators
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仿星器中的第二绝热不变量和新古典输运
DOI：
10.1063/1.873267
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发表时间：
1999
期刊：
影响因子：
--
通讯作者：
V. Nemov
中科院分区：
文献类型：
--
作者：
V. Nemov
用局域囚禁粒子的第二绝热不变量J-∥计算了星体中的新经典输运。本文提出了一种计算磁面上J∥变化的数值方法，该方法可以在实空间坐标中任意给定的星体磁场中进行计算，而不需要将磁场转换为磁坐标。导出了1/ν输运状态下新经典粒子通量和能量通量的方程，并用J∥的变化来表示。利用这些方法和方程，对新经典输运性质进行了评价，用于最近在磁坐标下研究的准螺旋对称性的实空间实现。
The second adiabatic invariant J∥ for locally trapped particles is used for calculating neoclassical transport in stellarators. A numerical method for calculating the variation of J∥ on a magnetic surface is developed, which allows one to make the calculations in an arbitrary stellarator magnetic field given in real-space coordinates without transforming the field to magnetic coordinates. Equations for neoclassical particle and energy fluxes for the 1/ν transport regime are derived, which are expressed through the variation of J∥. By making use of these method and equations, an evaluation of neoclassical transport properties is made for a real-space realization of quasihelical symmetry, which has been examined recently in magnetic coordinates.