泵浦光参量变化对激光等离子体烧蚀压力的影响  

THE INFLUENCE OF LASER PLASMA ABLATION PRESSURE DUE TO DIFFERENT PUMP LASER

作　　者：王启宇[1] 

机构地区：[1]哈尔滨师范大学

出　　处：《哈尔滨师范大学自然科学学报》2008年第6期49-52,共4页Natural Science Journal of Harbin Normal University

摘　　要：采用非平衡的辐射流体力学模型系统地研究了长脉冲弱激光与平面碳靶相互作用的物理过程,包括激光在等离子体中的传播和吸收,等离子体的流体力学发展和热力学状态等.考虑的方程有:等离子体流体力学方程组,激光吸收方程,非局域热动平衡电离下电子占据概率的速率方程组,电子离子的能量守恒方程组和光子的能量输运方程(三温方程组),以及描述物质状态的方程等.对于流体力学方程组,采用Von Newman显式格式进行求解.对于三温方程的求解必须采用隐式格式,所以采用整体线性化迭代格式迭代求解.Simultaneously this article used the non - balance the radiation hydromechanics model to systematically study the physical process which emphasizes that the long pulse and weak laser affected mutually with the plane carbon target, including laser in plasma dissemination and absorption, plasma hydromechanics development and thermodynamics condition and so on. The consideration equation includes： Plasma hydromechanics system of equations, laser absorption equation, under non - confined thermodynamical equilibrium ionization electronic hold probability speed system of equations, electronic ion conservation of energy system of equations and photon energy transportation equation （ three warm systems of equations）, as well as description state of matter equation and so on. We use explicit form of Von the Newman to carry on hydromechanics system of equations. And we get the whole linearization iterative scheme iteration to solution, because we must use the implicit form to deal with three warm equations

关 键 词：激光等离子体 激光推进 平均原子模型 辐射流体力学模型 

分 类 号：O4-45[理学—物理] TN241[电子电信—物理电子学]