电子束与等离子体相互作用中的反常效应

INVESTIGATION OF ANOMALOUS EFFECTS IN INTERACTION OF INTENSE RELATIVISTIC ELECTRON BEAM WITH PLASMA

本文对强流相对论性电子束与靶等离子体相互作用的反常吸收效应进行了理论研究。从符拉索夫方程出发,导出了强流相对论性电子束双流不稳定性效应解,并进行了弱碰撞修正,得到了相应的等离子体波增长率,对不同情况下出现反常效应的条件及机制进行了研究和讨论。

An important application of an Intense Relativistic Electron Beam(IREB)is to heat a fusion target. The mechanism of heating and the anomalous effect in the interaction of IREB with fusion target plasma are investigated in this paper. With the collisionless model, the two stream instability growth rate is obtained by using Vlasov equation. Furthermore, with the collision effect taking into account the growth rate with collision correction is obtained. The critical condition for two stream instability is given, and the problem of energy transform between IREB and target plasma is discussed.