【摘要】 初步建立脉冲激光烧蚀靶材的理论模型 ,根据流体动力学的质量连续性、动量守恒和能量守恒这三个基本方程 ,研究高能脉冲激光照射靶材产生等离子体的物理特性 .采用差分法和Pichard迭代法 ,求解带特定边界条件的流体力学三方程 ,得出已喷射等离子体的温度、密度和速度的分布的迭代方程 ,并用计算机进行了数值模拟 ,得出一些有意义的结论 .更多还原

【Abstract】 The theory model for pulsed-laser-driven ablation is established, and the plasma′s characteristics of the bulk target irradiated by pulsed laser with high power are studied in detail according to mass continuous condition, energy balance condition and momentum conservation. In addition, the velocity distribution of the plasma is discussed, and the plasma′s density and temperature near the ablation surface as the function of time are discussed respectively on the basis of hydrodynamic theory combined with boundary conditions by different method and Pichard iterative method.更多还原