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在解析求解等离子体流体力学方程组的基础上，数值求解了以ＭｇＸＩ为主体的等离子体能级占据数速率方程，进而给出了短脉冲驱动下膨胀冷却等离子体中ＭｇＸＩｌｓ３ｄ－ｌｓ４ｆ激光跃迁增益系数的时空分布，讨论了泵浦激光脉冲宽度对增益的影响。
Based on the analytical solution of the plasma hydrodynamics equations, the numerical solution of the plasma level level occupancy rate equation with MgXI is numerically solved, and then the gain coefficient of MgXIls3d-ls4f laser transition in the extended cooling plasma is given The temporal and spatial distributions discussed the effect of pump laser pulse width on gain.