Line-profile analysis of excitation spectroscopy in the even 4p^5(~2P_(1/2))nl′ [K′]_J(l′=1,3) autoionizing resonances of Kr  

作　　者：LI ChunYan WANG TingTing ZHEN JunFeng CHEN Yang 

机构地区：[1]College of Science,China Agricultural University [2]Hefei National Laboratory for Physical Sciences at the Microscale and Department of Chemical Physics,University of Science and Technology of China

出　　处：《Science China Chemistry》2013年第11期1623-1632,共10页中国科学（化学英文版）

基　　金：financially supported by the National Natural Science Foundation of China(51007092)

摘　　要：The even-parity autoionizing resonance series 4p^5np＇ [3/2] 1,2, [ 1/2] 1, and 4p^2nf＇ [5/213 of krytpon have been investigated by laser excitation from the two metastable states 4p55s [3/2]2 and 4p^55s＇ [1/2]0 in the photon energy region of 2900（P40000 cm^-1 at experimental bandwidth of -0.1 cm-1. The excitation spectra of the even-parity autoionizing resonance series, most of which are experimentally studied for the first time in this work, show typical asymmetric line shapes. Complementary information on level energies, quantum defects, line profile indices and resonance widths, resonance lifetimes and reduced widths of the auto- ionizing resonances are derived by Fano-type line-shape analyses of the experimental results. Results from this work indicate that the line profile index （q） and the resonance width （F） are approximately proportional to the effective principal quantum number （n＊）; the line separation of the 4p^5np＇ autoionizing resonances is also in good agreement with theoretical modelThe even-parity autoionizing resonance series 4p5np′[3/2]1,2,[1/2]1,and 4p5nf′[5/2]3of krytpon have been investigated by laser excitation from the two metastable states 4p55s[3/2]2and 4p55s′[1/2]0in the photon energy region of 29000–40000 cm 1at experimental bandwidth of^0.1 cm 1.The excitation spectra of the even-parity autoionizing resonance series,most of which are experimentally studied for the first time in this work,show typical asymmetric line shapes.Complementary information on level energies,quantum defects,line profile indices and resonance widths,resonance lifetimes and reduced widths of the autoionizing resonances are derived by Fano-type line-shape analyses of the experimental results.Results from this work indicate that the line profile index(q)and the resonance width()are approximately proportional to the effective principal quantum number(n*);the line separation of the 4p5np′autoionizing resonances is also in good agreement with theoretical model.

关 键 词：krypton （Kr） autoionizing resonances Fano-type lineshape 

分 类 号：O562[理学—原子与分子物理]