磁化等离子体环境对氢原子能级结构的影响

Combined effect of plasma environment and external magnetic field on hydrogen

本文通过非微扰求解薛定谔方程,研究了强磁场磁化的等离子体环境中的原子能级结构和辐射动力学过程.在较宽的磁场强度范围和等离子体屏蔽参数范围内,给出了氢原子基态以及低激发态的能级、辐射跃迁能量和振子强度等重要的原子参数,定量地描述了强磁场和等离子体屏蔽共同作用的综合效应.相关的结果有助于增进对极端环境下原子光谱结构的认识,在等离子体光谱诊断和天文光谱观测方面有一定的借鉴意义.

For hydrogen atom imbedded in Debye plasmas with an external magnetic field, the combined effect on bound-bound transitions has been investigated. The electron eigenenergies and wave functions are determined by non-perturbatively solving the Schr？dinger equation. Both transition frequencies and oscillator strengths are presented for a wide range of plasma screening parameters and external magnetic field strengths. With increasing the plasma screening, the shielding effects on the Lyman series are shown to be decreased in its intensity and the red-shift of its frequency. After adding an external magnetic field, atomic energy levels undergo even stronger perturbation, and the line shapes become polarized. The non-perturbative effect is significant for the quantum states （n 〉3）. Comparisons made with other theoretical calculations are shown in good agreement. The results reported here may be useful for the interpretation of spectral properties of H-like ions in laboratory and astrophysical Debye plasmas.