激光等离子体推进机理是激光推进技术的关键。基于平均原子(离子)模型(AAM)和碰撞-辐射平衡模型(CRM),对激光与等离子体相互作用过程进行了耦合计算,得出了一些特性参数。激光打碳靶实验结果验证了模拟结果的正确性,表明激光双脉冲打碳靶比单脉冲多产生最高为50%的冲量耦合系数,有利于激光推进。这为激光等离子体推进的进一步研究提供参考。 Laser plasma propulsion mechanism is the key to laser propulsion technology. Based on the average atomic (ion) model (AAM) and the collision-radiation equilibrium model (CRM), the coupling process between the laser and the plasma was calculated and some characteristic parameters were obtained. The experimental results of the laser-driven carbon target verify the correctness of the simulation results, indicating that the laser dual-pulse carbon target produces more than 50% impulse coupling coefficients more than a single pulse, which is in favor of laser propulsion. This provides a reference for the further research of laser plasma propulsion.