应用Compton散射模型、平均原子模型和碰撞-辐射模型,研究了超强激光等离子体推进机制,提出了将入射光和Compton散射光作为超强激光等离子体推进新机制,给出了束缚电子占据概率和流体力学修正方程,得到了O、Ne、N、Xe的等离子体烧蚀压、等效烧蚀深度和烧蚀速度随入射激光功率密度变化的模拟结果。结果表明：与散射前相比,随着激光功率密度增大,Xe烧蚀压最大,其次是Ne、O、N;O等效烧蚀深度最大,其次是N、Xe、Ne;Ne弛豫时间最长,其次是O、N、Xe;Xe烧蚀速度最快,其次是Ne、O、N。采用含电子多的轻元素超强激光等离子体,有利于等离子体整体推进。

By using Compton scattering model,average atom model and collision radiation model,the propulsion mechanism of extra-intense laser plasma is studied. A new propulsion mechanism of extra-intense laser plasma formed by incident laser and Compton scattering is put forward. The occupied probability of bound electron and revised hydromechanics equation are given. The simulated effects with incident laser power density change on the ablation pressure of laser plasma of O,Ne,N and Xe,equivalent ablation deep and ablation speed are get. The results show that than before the scattering,Xe’s ablation pressure is the maximum with the incident laser power density increase,the others are Ne,O and N. O’s equivalent ablation deep is the maximum with the incident laser power density change,the others are N,Xe and Ne. Ne’s relaxation time is the maximum,the others are O,N and Xe. Xe’s ablation speed is the maximum,the others are Ne,O and N. Using extra-intense laser-plasma of light multi-electron element,it is favored to laser plasma propulsion.