强激光等离子体耦合效应的数值模拟
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摘要: 研究了高强度（1012(1014W/cm2）,纳秒脉冲(高斯型)激光与AI、 CH等离子体的耦合效应。采用一维双温、单流体力学方程组,数值模拟研究激光强度和波长对靶表面能量沉积和对等离子体特征参数的影响。激光等离子体耦合的主要机制有:轫致辐射、逆轫致辐射吸收、热扩散和电子、离子之间碰撞能量交换。给出了电子最高温度与光强的近似定量关系。Abstract: The coupling effect of high-intensity nanosecond laser pulse with A1 or CH plasamas are studied using the hydrodynamical equations which are one-dimesional, doubl-tem-perature, single-fluid. The effects of laser intensity and wavelength on energy deposition in the target surface and plasma parametes are numerically investigated.
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Key words:
- high intensity laser /
- plasma /
- coupling effect /
- numerical simulation
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