Investigation of autoionization spectra of Sm atoms using an isolated-core excitation method
Qin Wen-Jie(秦文杰), Dai Chang-Jian(戴长建)†, Xiao Ying(肖颖), and Zhao Hong-Ying(赵洪英)
Key Laboratory of Display Materials and Photoelectric Devices, Ministry of Education, Tianjin 300384, China;School of Science, Tianjin University of Technology, Tianjin 300384, China
Abstract 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 4 f66pnl and 4f55d6snl (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 4f66snl 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.
Received: 31 August 2008
Revised: 14 October 2008
Accepted manuscript online:
Fund: Project supported by the National
Natural Science Foundation of China (Grant Nos 10574098 and
10674102) and the Natural Science Foundation of Tianjin of China
(Grant No 05YFJMJC05200).
Cite this article:
Qin Wen-Jie(秦文杰), Dai Chang-Jian(戴长建), Xiao Ying(肖颖), and Zhao Hong-Ying(赵洪英) Investigation of autoionization spectra of Sm atoms using an isolated-core excitation method 2009 Chin. Phys. B 18 1833
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