Ti类氦Kα线在高温稠密等离子体中的漂移  

Spectral line shift of He-like titanium in hot and dense plasmas

作　　者：冉林松[1,2] 王红斌[1] 李向东[3] 张继彦[1] 程新路[2] 

机构地区：[1]中国工程物理研究院激光聚变研究中心,绵阳621900 [2]四川大学原子与分子物理研究所,成都610065 [3]中国科学院上海光学精密机械研究所,上海201800

出　　处：《物理学报》2009年第9期6096-6100,共5页Acta Physica Sinica

基　　金：国家自然科学基金(批准号:10776036)资助的课题~~

摘　　要：采用离子球模型,通过自洽求解Dirac方程和Poisson方程,得到类氦Ti离子Kα线系的两条电偶极辐射光谱能量随不同等离子体环境的变化关系.同时分析了束缚电子交换能随等离子体环境的变化规律.结果表明:光谱能量漂移量随等离子体电子密度变化呈现出很好的线性关系.对此,拟合得到Ti类氦Kα线光谱能量漂移量随等离子体环境参数变化的公式,对探索高温高密度等离子体诊断方法具有一定意义.By assuming the ion sphere model, the self-consistent field method for the Poisson-Boltzmann equation and the Dirac equation is used to calculate the energy levels of He-like titanium immersed in hot and dense plasmas. Consequently, the spectral shifts of the intercombination line and the resonance line and the shifts of the exchange energy of He-like titanium in hot and dense plasmas are studied. The results show that the two electronic dipole transitions red shift nearly linearly with the increase of plasma electron density. The formula of the linear relationship is found. The results may be useful in developing the new method of dense plasma diagnosis.

关 键 词：类氦离子 自洽场离子球模型 光谱漂移 等离子体诊断 

分 类 号：O536[理学—等离子体物理]