摘要:
基于K壳层稳态碰撞辐射模型的程序,详细分析Al等离子体类锂伴线的主要布居机制,分别给出1s2p22P—1s22p2P,1s2s2p（1S）2P—1s22s2S与1s2p22D—1s22p2P这两组类锂伴线的线强比随电子温度和密度的变化趋势.研究发现,这两组伴线线强比对电子密度敏感而对电子温度不敏感,可以将它们用于高温高密度等离子体的密度诊断.同时,给出了类氦的互组合线与共振线的线强比随电子密度的变化情况.计算结果表明,在高密度下互组合线的线强由于受到周边的不可分辨的类锂伴线线强的影响,线强比会出现明显的偏大.最后给出了＂神光-Ⅱ＂装置上获得的Al平面靶激光等离子体发射谱和理论模拟谱,并给出了相应的电子温度和密度.
Abstract:
Base on the code of steady K-shell model for collision radiative balance,we analyze the main mechanism of populating the Li-like satellite of aluminum plasma in detail.The evolutions of the Li-like satellite intensity ratios of 1s2p2 2P—1s22p2P,1s2s2p（1S）2P—1s22s2S and 1s2p22D—1s22p2P with electron temperature and density are depicted from which we find that the intensity ratio is density sensitive and temperature unsensitive,which can be used to diagnose the electron density in hot dense plasma.At the same time,the evolution of the intensity ratio of He-like to He-like resonant with electron density is also given.The value of the ratio is large in the high electron density region due to the influence of the undistinguished Li-like statellite around the He-like intercombination.Finally,we simulate the spectra emitting from the hot dense aluminum plasmas generated by the ＂Shengguang-Ⅱ＂ equipment and give the electron temperature and density.
首页
登录
注册
下载: