Investigation of autoionization spectra of Sm atoms using an isolated-core excitation method  

作　　者：秦文杰 戴长建 肖颖 赵洪英 

机构地区：[1]Key Laboratory of Display Materials and Photoelectric Devices,Ministry of Education [2]School of Science,Tianjin University of Technology

出　　处：《Chinese Physics B》2009年第5期1833-1837,共5页中国物理B（英文版）

基　　金：supported by the National Natural Science Foundation of China(Grant Nos 10574098 and 10674102);the Natural Science Foundation of Tianjin of China(Grant No 05YFJMJC05200)

摘　　要：Using the isolated-core-excitation scheme and three-step laser resonance ionization spectroscopy approach, this paper, for the first time, has systematically investigated the autoionization spectra of atomic Sm, belonging to the 4f^6 6pn/ and 4f^5 5d6sn/ （l = 0,2） configurations. In the experiment, the first two tunable dye lasers are employed to excite the Sm atom from its initial state to the different 4f^6 6sn/ bound Rydberg states, then the third dye laser is scanned to drive the atom to the doubly-excited autoionizing states. With the above excitation scheme, the measured transition profiles of the autoionizing states are nearly symmetric, from which the level energies and widths can be easily obtained.Using the isolated-core-excitation scheme and three-step laser resonance ionization spectroscopy approach, this paper, for the first time, has systematically investigated the autoionization spectra of atomic Sm, belonging to the 4f^6 6pn/ and 4f^5 5d6sn/ （l = 0,2） configurations. In the experiment, the first two tunable dye lasers are employed to excite the Sm atom from its initial state to the different 4f^6 6sn/ bound Rydberg states, then the third dye laser is scanned to drive the atom to the doubly-excited autoionizing states. With the above excitation scheme, the measured transition profiles of the autoionizing states are nearly symmetric, from which the level energies and widths can be easily obtained.

关 键 词：isolated-core-excitation autoionization spectra Sm atom 

分 类 号：O562.3[理学—原子与分子物理]