中国物理B ›› 2009, Vol. 18 ›› Issue (10): 4251-4258.doi: 10.1088/1674-1056/18/10/027

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Investigation of odd-parity Rydberg states of Eu I with autoionization detection

肖颖, 戴长建, 秦文杰   

  1. Key Laboratory of Display Materials and Photoelectric Devices, Ministry of Education, Tianjin 300191, China School of Science, Tianjin University of Technology, Tianjin 300384, China
  • 收稿日期:2009-01-02 修回日期:2009-03-11 出版日期:2009-10-20 发布日期:2009-10-20
  • 基金资助:
    Project supported by the National Natural Science Foundation of China (Grant Nos 10574098, 10674102) and the Natural Science Foundation of Tianjin (Grant No 05YFJMJC05200).

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)   

  1. Key Laboratory of Display Materials and Photoelectric Devices, Ministry of Education, Tianjin 300191, China School of Science, Tianjin University of Technology, Tianjin 300384, China
  • Received:2009-01-02 Revised:2009-03-11 Online:2009-10-20 Published:2009-10-20
  • Supported by:
    Project supported by the National Natural Science Foundation of China (Grant Nos 10574098, 10674102) and the Natural Science Foundation of Tianjin (Grant No 05YFJMJC05200).

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摘要： 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.

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.

Key words: europium atom, isolated-core-excitation, bound Rydberg state, autoionization detection

中图分类号:  (Autoionization)

  • 32.80.Zb
32.30.Jc (Visible and ultraviolet spectra) 32.80.Fb (Photoionization of atoms and ions)