超高速碰撞产生的等离子体电磁辐射模型  

Electromagnetic radiation model of plasma induced by hypervelocity impact

作　　者：巨圆圆 张庆明[2] JU Yuanyuan;ZHANG Qingming(Naval Research Institute of PLA,Beijing 100161,China;State Key Laboratory of Explosion Science and Technology,Beijing Institute of Technology,Beijing 100081,China)

机构地区：[1]海军研究院,北京100161 [2]北京理工大学爆炸科学与技术国家重点实验室,北京100081

出　　处：《兵器材料科学与工程》2025年第2期34-38,共5页Ordnance Material Science and Engineering

基　　金：国家自然科学基金(11032003,11221202);国家重点基础研究发展计划(2010CB731600)。

摘　　要：超高速碰撞等离子体运动过程中产生电磁辐射。在碰撞的初期,等离子体运动伴随可见光谱,主要有较强的线光谱和较弱的连续光谱。线光谱主要是由于等离子体中激发态电子的跃迁产生,连续光谱主要是由于等离子体韧致辐射和复合辐射产生。本文建立了等离子体电磁辐射的理论模型,通过计算3s^(2)3p-3s^(2)4s两条Al I特征谱线,并与实验结果进行对比,得到合理的等离子体数密度和温度分布参数。在此基础上,预测3s^(2)3p-3s^(2)3d两条Al I特征谱线,理论模型计算结果与实验结果基本一致,表明该模型能有效计算超高速碰撞等离子体电磁辐射。The plasma generated by hypervelocity impact is associated with the electromagnetic radiation.Visible spectrum appears at the initial stage of impact,including an obvious line spectrum and weak continuous spectrum.The transition of excited state electrons in the plasma mainly results in the line spectrum,and the plasma recombination radiation and bremsstrahlung radiationmainly results in the continuous spectrum.In the current paper,a theoretical model on the electromagnetic radiation associated with the plasma was established.The spectrum of 3S^(2)3p⁃3S^(2)4s transition of Al I was calculated and compared with the experimental results,and then the reasonable distribution parameters on plasma number density and temperature were obtained.On this basis,the spectrum of 3S^(2)3p⁃3S^(2)4s transition of Al I form the theoretical model was basically the same as the experimental result,showing that the model is valid for calculating the spectrum associated with the plasma induced by hypervelocity impact.

关 键 词：超高速碰撞 等离子体 电磁辐射 理论模型 

分 类 号：O3[理学—力学] O4