电场下Ba原子6pnk Stark自电离态光谱的试验研究  

Experimental Study of Ba 6pnk Stark Autoionizing Spectra under Electrical Field

作　　者：刘永萍[1] 袁淑立[1] 于桂凤[1] 徐进栋[1] 

机构地区：[1]青岛农业大学理学院,山东青岛266109

出　　处：《青岛农业大学学报（自然科学版）》2007年第3期222-226,共5页Journal of Qingdao Agricultural University(Natural Science)

摘　　要：利用孤立实激发技术探测了Ba原子电场下的高激发态光谱,给出了收敛于6p1/2+和6p3/2+电离限的两个系列的大量自电离光谱,利用Lorentz线形拟和技术得到了谱线的能级位置和宽度。研究了自电离光谱对电场的依赖关系,并对比分析了两个系列光谱特性的异同。对试验结果进行了定性的分析,研究了核子数较大原子内部电子的相关作用。A lot of spectra of the Ba 6pnk autoionizing Stark states converging to the 6p（1/2）^＋ and 6p（3/2）^＋ ionization thresholds are measured by the method of Isolated Core Excitation （ ICE ）. Experimental results are analyzed by fitting them to the Lorentzian profile, from which the positions and widths are determined. Different spectroscopic properties between the Ba 6p（1/2）nk and 6p（3/2）nk autoionizing Stark states are investigated. Through analyzing the experimental data the effects of the electrical field on the spectra are studied, the correlations of inner electron are explored.

关 键 词：钡原子(Ba) 自电离态 孤立实激发(ICE) Lorentz线形 电场 

分 类 号：O561.4[理学—原子与分子物理]