Magnetospheric Wave - Particle Processes

以往对热等离子体中微观不稳定性的研究一般采用等离子体色散函数，该函数严格适用于麦克斯威廉分布。然而，天然等离子体包含一个明显的高能成分，它可以最好地用洛伦兹分布来模拟。这种分布的稳定性性质可能与Maxwilliam等离子体的稳定性性质有很大不同，从而导致等离子体波的增长或阻尼率发生巨大变化。这项资助是为了明确地评估洛伦兹等离子体的稳定性，并使用热射线跟踪程序来研究全热等离子体中波的路径积分增益。*//

Previous studies of micro-instabilities in a hot plasma have generally employed the plasma dispersion function which is strictly applicable only to a Maxwilliam distribution. Natural plasmas, however, contain a pronounced high energy component which can best be modeled a by Lorentzian distribution. The stability properties of such a distribution can be substantially different from that of a Maxwilliam plasma leading to dramatic changes in the growth or damping rate of plasma waves. This grant is to evaluate explicitly the stability of a Lorentzian plasma and to investigate the path integrated gain of waves in a fully hot plasma using a hot ray tracing code. *** //