托卡马克中α粒子的新经典输运

THE NEOCLASSICAL TRANSPORT OF THE ENERGETIC ALPHA PARTICLES IN TOKAMAK

本文利用不可逆熵生产率的变分原理导出托卡马克中α粒子的新经典输运理论,求得普遍情况下高能α粒子的新经典粒子通量、能量通量和电流通量。所求出的α粒子自举电流和α粒子通量中的Ware通量比过去的结果大δ^(-1)(δ为逆纵横比)倍,而方向相反。

The neoclassical transport of the energetic alpha particles in tokamak is dealt with by means of a variational priciple for the rate of irreversible entropy production. The neoclassical particle, energy and current fluxes of the energetic alpha particles have been evaluated in the presence of the electric field and on preserving the drag and pitch angle scattering of both electron and ion by the background ions. The calculated alpha bootstrap current and Ware flux are δ-1 (δ is the inverse aspect ratio) times in magnitute larger than and contrary in direction to those obtained in the past.