氘氚燃烧托卡马克等离子体内扭曲模稳定化分析  

STABILIZATION OF INTERNAL KINK MODES BY ALPHA PARTICLES IN D-T BURNING TOKAMAKS

作　　者：石秉仁[1] 

机构地区：[1]核工业西南物理研究院

出　　处：《核聚变与等离子体物理》1992年第4期193-198,共6页Nuclear Fusion and Plasma Physics

摘　　要：本文分析了聚变α粒子对内扭曲模的稳定作用。去稳作用来自等离子体比压值,稳定化效应来自离子反磁漂移及α粒子的零频率稳定化,两种对抗效应均随等离子体参数变化。对一种具体的燃烧等离子体方案,内扭曲模增长率将是等离子体温度的函数。磁轴处α粒子的密度由聚变反应率及α粒子的慢化率确定。以CIT的设计为例,分析了内扭曲模的稳定化区域及激发阈值,这些结果有普遍性意义。Alpha particle stabilization of internal kink modes in a burning tokamak plasma is analysed by consistently considering the a-particle production and slow-down during temperature evolution. As an example, the CIT design parameters are taken as baseline. Then the dispersion relation for internal kink mode is numerically calculated. With the increase in temperature, the growth the rate of the resistive internal kink decreases rapidly; this brings the plasma into a quiescent operation regime. Alpha particles can broaden this regime to a high enough temperature range if the density ne(0)<2.5×1014cm-3.

关 键 词：扭曲模 稳定性 等离子体 Α粒子 

分 类 号：TL612[核科学技术—核技术及应用]