Neutral particle transport under strong hydrogen recycling condition in the GAMMA 10 central cell
Neutral particle transport under strong hydrogen recycling condition in the GAMMA 10 central cell
复制标题
GAMMA 10 中央电池强氢循环条件下的中性粒子传输
DOI：
10.1016/s0022-3115(98)00673-4
复制
发表时间：
1999
影响因子：
3.1
通讯作者：
K. Yatsu
中科院分区：
文献类型：
--
作者：
S. Kobayashi;Y. Nakashima;M. Shoji;K. Tsuchiya;Y. Hasegawa;M. K. Islam;N. Yamaguchi;M. Yoshikawa;A. Mase;T. Tamano;K. Yatsu
为了了解中性氢在伽马10串联反射镜ICRH等离子体中的行为，我们尝试用考虑氢循环影响的DEGA蒙特卡罗程序对中性输运进行了新的模拟。通过在Degas中引入倍增系数来控制解吸试验颗粒的数量，从而首次模拟了循环系数超过1的条件下的中性迁移。通过使用倍增系数，发现模拟得到的原子氢密度的轴向分布发生了显著变化。另一方面，对模拟氢密度的径向分布影响不大。模拟结果考虑了倍增系数的轴向变化，较好地预测了H-α发射的测量结果。这表明强烈的氢循环集中在中面附近。从Degas模拟得出的壁面回流系数的角度对计算结果进行了讨论。
In order to understand the behavior of neutral hydrogen in ICRH plasmas of the GAMMA 10 tandem mirror, we tried new simulations of neutral transport by using the DEGAS Monte Carlo code in which the effects of hydrogen recycling were taken into account. This simulation has been performed by introducing a multiplication coefficient in DEGAS to control the amount of desorbed test particles, which enables us to simulate the neutral transport for the first time under the conditions in which the recycling coefficient exceeds unity. By using the multiplication coefficient, it was found that the axial profile of the atomic hydrogen density obtained from the simulation changed significantly. On the other hand, there is little influence on the radial profile of the simulated hydrogen density. The simulation result, taking the axial variation of the multiplication coefficient into consideration, well predicted the result of the Hα-emission measurements. This indicates that strong hydrogen recycling is localized near the midplane. These calculation results are discussed from the view point of the wall-reflux coefficient deduced from the DEGAS simulation.
T. YONEYA：物理。
DOI：
--
发表时间：
--
期刊：
影响因子：
--
作者：
通讯作者：
--