Stabilization of Short Wavelength Resistive Ballooning Modes by Ion-to-Electron Temperature and Gradient Ratios in Tokamak Edge Plasmas  

作　　者：Jian-Qiang Xu Xiao-Dong Peng Hong-Peng Qu Guang-Zhou Hao 许健强;彭晓东;曲洪鹏;郝广周(Southwestern Institute of Physics,Chengdu 610041,China)

机构地区：[1]Southwestern Institute of Physics,Chengdu 610041,China

出　　处：《Chinese Physics Letters》2020年第6期13-16,共4页中国物理快报（英文版）

基　　金：Supported by the National Key R&D Program of China(Grant Nos.2017YFE0300405 and 2017YFE0301200);the National Natural Science Foundation of China(Grant Nos.11775067,11775069,11875019,and 11805058)。

摘　　要：We numerically investigate the effects of ion-to-electron temperature ratio T_i/T_e and temperature gradient ratioη_i/η_e on resistive ballooning inodes(RBMs)under tokamak edge plasma conditions.The results show that the growth rates of the RBMs exhibit the characteristic of a quite broad poloidal wavenumber spectrum in the cold ion limit.The growth rate spectrum becomes narrower and the peak of the spectrum shifts from the short to long wavelength side with increasing T_i/T_e andη_i/η_e.The electron temperature gradient has a very weak effect on the stability of RBMs.However,the ion-to-electron temperature ratio and the temperature gradient ratio have strong stabilizing effects on short-wavelength RBMs,while they have relatively weak effects on long-wavelength RBMs.

关 键 词：Resistive SPECTRUM ELECTRON 

分 类 号：TL612[核科学技术—核技术及应用]