Monte Carlo computations of neoclassical transport
Monte Carlo computations of neoclassical transport
复制标题
新古典输运的蒙特卡洛计算
DOI：
10.1063/1.866955
复制
发表时间：
1988
影响因子：
4.6
通讯作者：
J. Nührenberg
中科院分区：
文献类型：
--
作者：
W. Lotz;J. Nührenberg
用Monte Carlo模拟方法计算了一般几何仿星器和有无涟漪托卡马克中的新古典输运系数和约束时间，得到了较宽范围的平均自由程、等离子体与回旋半径之比和径向电场。单能粒子的结果可以用简单的公式表示，使用归一化到托卡马克平台值的传输系数和归一化到一半的连接长度的平均自由程。与单能粒子进行俯仰角散射和能量弛豫的输运系数卷积麦克斯韦能量分布。结果进行了比较与理论和模拟使用的颗粒分布进行俯仰角以及能量散射。总体协议是好的。传输系数与麦克斯韦能量分布的l=2仿星器和其他各种仿星器配置。粒子输运系数，以及能量输运系数，为这些配置计算离子（氘核）以及电子。粒子和能量约束时间的估计也得到。
Neoclassical transport coefficients and confinement times in stellarators of general geometry and tokamaks with and without ripple are computed by Monte Carlo simulation over wide ranges of mean free paths, ratios of plasma to gyroradius, and radial electric fields. The results for monoenergetic particles can be represented by simple formulas using a transport coefficient normalized to the tokamak plateau value and a mean free path normalized to half the connection length. Transport coefficients obtained with monoenergetic particles subjected to pitch angle scattering and energy relaxation are convoluted with a Maxwellian energy distribution. The results are compared with theory and simulations using a particle distribution subjected to pitch angle as well as energy scattering. The overall agreement is good. Transport coefficients with Maxwellian energy distributions for l=2 stellarators and for various other stellarator configurations are shown. Particle transport coefficients, as well as energy transport coefficients, for these configurations are computed for ions (deuterons) as well as for electrons. Estimates of particle and energy confinement times are also obtained.
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