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1 对托卡马克逃逸电子的一般介绍 近期,人们对托卡马克中逃逸电子输运的研究十分重视与活跃。从欧姆加热与辅助加热的等离子体中,逃逸约束时间具有反常行为,这与内部的磁场涨落相关;我们利用逃逸电子作为一种试验粒子来诊断托卡马克内部的磁涨落。从约束的环向等离子体中观察到粒子与能量的损失率远比由新纪典输运理论所预言的要大得多,此状态取决于平均等离子体参数与库仑碰撞。若干类型的等离子体湍流提供了附加的等离子体输运。等离子体参数的涨落将通过静电涨落或磁涨落引起输运。该涨落所驱动的径向粒子通量为(1)其中,是扰动角向电场,是扰动电子密度。是
1 General introduction to tokamak escaping electrons Recently, the research on escape electron transport in tokamak has been paid great attention and active. From the ohmic and auxiliary heated plasma, the escape constraint time has an anomalous behavior that is related to the internal magnetic field fluctuations; we use the escape electron as a test particle to diagnose the magnetic fluctuations within the tokamak. The loss of particles and energy observed from the confined toroidal plasma is far greater than predicted by the Neoclassical transport theory, which depends on the average plasma parameter and the Coulomb collision. Several types of plasma turbulence provide additional plasma transport. Fluctuation of the plasma parameters will cause transport through electrostatic fluctuations or magnetic fluctuations. The radial particle flux driven by this fluctuation is (1) where is the perturbed angular electric field and is the perturbed electron density. Yes