高能中性束注入加热

THE ENERGETIC NEUTRAL BEAM INJECTION HEATING

本文仔细地研究了高能中性束注入加热的有关问题,利用多束模型计算了中性束注入加热。本文的主要特点是在捕获快离子与本底离子和电子能量交换表示式中,直接用误差函数积分进行计算,而不像以前的计算中作大参量和小参量展开近似。当快离子能量比较低时,大参量展开不再适用,因此本文的计算更为精确,更为有用。给出了多束注入加热的计算结果及其结果的讨论。本计算方法可与输运方程联立求解,数值模拟等离子体行为。

In this paper, the problems related with the energetic neutral injection heating are considered in detail. The energetic neutral injection heating is calculated by a multi-beam model. The direct calculation of the error function integral in the energy interchange between the trapped fast ions and the basic plasma particles is a main characteristic of this paper. It is different from other calculations in which either a large or a small parameter expansion approximation is used. The large parameter expansion approximation is no longer valid as the energy of fast ions becomes lower; therefore our calculation is more accurate. The results of heating calculation and some discussions are given. The code can include the transport equation of plasma to conduct the simulation of plasma behaviour.