Investigation of odd-parity Rydberg states of Eu I with autoionization detection
Xiao Ying(肖颖), Dai Chang-Jian(戴长建)†, and Qin Wen-Jie(秦文杰)
Key Laboratory of Display Materials and Photoelectric Devices, Ministry of Education, Tianjin 300191, China School of Science, Tianjin University of Technology, Tianjin 300384, China
Abstract Isolated-core-excitation (ICE) scheme and autoionization detection are employed to study the bound Rydberg states of europium atom. The high-lying states with odd parity have been measured using the autoionization detection method with three different excitation paths via 4f76s6p[ 8P5/2], 4f76s6p[ 8P7/2] and 4f76s6p[ 8P9/2] intermediate states, respectively. In this paper the spectra of bound Rydberg states of Eu atom are reported, which cover the energy regions from 36000 cm-1 to 38250 cm-1 and from 38900 cm-1 to 39500 cm-1. The study provides the information about level energy, the possible J values and relative line intensity as well as the effective principal quantum number n* for these states. This work not only confirms the previous results of many states, but also discovers 11 new Rydberg states of Eu atom.
Received: 02 January 2009
Revised: 11 March 2009
Accepted manuscript online:
Fund: Project supported by the National
Natural Science Foundation of China (Grant Nos 10574098, 10674102)
and the Natural Science
Foundation of Tianjin (Grant No 05YFJMJC05200).
Cite this article:
Xiao Ying(肖颖), Dai Chang-Jian(戴长建), and Qin Wen-Jie(秦文杰) Investigation of odd-parity Rydberg states of Eu I with autoionization detection 2009 Chin. Phys. B 18 4251
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