等离子体密度标长对高能质子加速的影响

Numeral Simulation Effect of Plasma Density Scale Length on the Energetic Protons Generation in Laser-Plasma Interaction

超短超强激光与等离子体相互作用中产生的高能质子在激光惯性约束核聚变,新型台面质子加速器以及医学等研究领域已成为广泛关注的一个热点.超强激光与等离子体相互作用中密度标长对超热电子或高能质子加速影响很大,所以为了确定超热电子或高能质子的加速机制,需要确定等离子体的密度标长.本文利用PIC法得到的模拟结果来研究了超强激光与等离子体相互作用中高能质子产生的物理机制以及前表面等离子体密度标长对超热电子或高能质子加速的影响.

Nowdays the research of energetic proton is one of the hot topics. Plasma density scale length has a strong impact on the ultra hot electrons or high energy protons acceleration in ultra-intence laser plasma interaction. Therefore , in order to determine the hot electrons or high-energy proton acceleration mechanisms, we need to determine the plasma density scale length. This paper discusses the generation mechanisms , beam characteristics , diagnostics , potential applications and recent studies of high energy protons, especially protons produced by irradiating solid targets with ultra-intense laser pulses.