产生高β托卡马克中高能电子的电子迴旋共振加热方法

Rosenbluth等人曾建议在托卡马克外侧产生少量高能香蕉粒子就可以稳定气球模,使托卡马克过渡到第二稳定区运行。本文就设计了一种用电子迴旋共振加热(简称ECRH)在反应堆托卡马克中产生这样的高能电子的方法:在托卡马克外侧,主要沿小环θ方向射入一束具有有限N_∥和某一合适频率ω的射频波,使波束主要在一个磁面附近的窄层内传播,利用高次谐频接力式加热把处于分布函数尾部的少量电子变成这样的高能电子。用各向异性弱相对论介电系数理论作数值计算发现,当N_∥和ω取适当值时,寻常模和异常模都有明显的加热作用。关键词：

ELECTRON CYCLOTRON RESONANCE HEATING METHOD FOR CREATING ENERGETIC ELECTRONS IN HIGH β TOKAMAK

Rosenbluth et al. have suggested that energetic particles trapped at unfavorable curvature region of a tokamak can provide an access to the second stability region. The ECRH processes for achieving this novel state in reactor tokamak is proposed. The RF within the proper ranges of frequency and wave vector are injected from the outside of tokamak of a chosen magnetic surface. Only a few percent of electrons is heated by the high electron cyclotron harmonic resonance successively. The numerical results show that heating is efficient for both ordinary and extraordinary modes.