Line-Profile Analysis of Excitation Spectroscopy in the Even 3p^5（^2P1/2）nl′[K′]J（l′=1,3） Autoionizing Resonances of Ar  

Ar原子偶宇称3p^5（^2P1／2）nl′[k′]J（l′=1，3）自电离态激发谱线形研究

作　　者：李春燕[1] 周梅[1] 何志巍[1] 张今红 陈旸[2] 李春燕;周梅;何志巍;张今红;陈旸(中国农业大学理学院,北京100083;中国科学技术大学化学物理系,合肥微尺度物质科学国家实验室(筹),合肥230026)

机构地区：[1]中国农业大学理学院,北京100083 [2]中国科学技术大学化学物理系,合肥微尺度物质科学国家实验室(筹),合肥230026

出　　处：《Chinese Journal of Chemical Physics》2016年第4期418-424,I0001,共8页化学物理学报（英文）

摘　　要：The even-parity autoionizing resonance series 3p^5np′[3/2]1,2, 3p^5np′[1/2] 1, and 3p^5nf′[5/2]3 of Ar have been investigated exciting from the two metastable states 3p^54s[3/2]2 and 3p^54s′[1/2]0 in the photon energy range of 32500-35600 cm^-1 with an experimental band- width of ～0.1 cm^-1. The excitation spectra of the even-parity autoionizing resonance series show typical asymmetric line shapes. New level energies, quantum defects, line profile index and resonance widths, resonance lifetime and reduced widths of the autoionizing resonances are derived by a Fano-type line-shape analysis. The line profile index q and the resonance widths F are shown to be approximately proportional to the effective principal quantum number n^＊. The line separation of the 3p^5np′ autoionizing resonances is discussed.

关 键 词：AR Autoionizing resonances Fano-type lineshape 

分 类 号：O4[理学—物理]