We numerically investigate the effects of ion-to-electron temperature ratio T i / T e and temperature gradient ratio η i / η e on resistive ballooning modes (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 and η 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.

中文翻译：

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托卡马克边缘等离子体中离子对电子的温度和梯度比对短波电阻气球模式的稳定作用

我们数值研究了托卡马克边缘等离子体条件下离子电子温度比T i / T e和温度梯度比ηi /ηe对电阻膨胀模式（RBMs）的影响。结果表明，在冷离子极限下，RBMs的生长速率表现出相当宽的极谱波数谱的特征。随着T i / T e和ηi /ηe的增加，生长速率谱变窄并且谱的峰从短波长侧移到长波长侧。电子温度梯度对RBM的稳定性影响很小。然而，离子电子温度比和温度梯度比对短波长RBM具有很强的稳定作用，而对长波长RBM具有相对较弱的影响。