中国物理B ›› 2009, Vol. 18 ›› Issue (8): 3384-3394.doi: 10.1088/1674-1056/18/8/044

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Experimental study of highly excited even-parity bound states of the Sm atom

秦文杰, 戴长建, 肖颖, 赵洪英   

  1. Key Laboratory of Display Materials and Photoelectric Devices, Ministry of Education, Tianjin 300384, China School of Science, Tianjin University of Technology, Tianjin 300384, China
  • 收稿日期:2008-12-18 修回日期:2008-02-16 出版日期:2009-08-20 发布日期:2009-08-20
  • 基金资助:
    Project supported by the National Natural Science Foundation of China (Grant Nos 10574098 and 10674102) and the Natural Science Foundation of Tianjin (Grant No 05YFJMJC05200).

Experimental study of highly excited even-parity bound states of the Sm atom

Qin Wen-Jie(秦文杰), Dai Chang-Jian(戴长建)†, Xiao Ying(肖颖), and Zhao Hong-Ying(赵洪英)   

  1. Key Laboratory of Display Materials and Photoelectric Devices, Ministry of Education, Tianjin 300384, China School of Science, Tianjin University of Technology, Tianjin 300384, China
  • Received:2008-12-18 Revised:2008-02-16 Online:2009-08-20 Published:2009-08-20
  • Supported by:
    Project supported by the National Natural Science Foundation of China (Grant Nos 10574098 and 10674102) and the Natural Science Foundation of Tianjin (Grant No 05YFJMJC05200).

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摘要： In this work, a three-step autoionization detection method and direct photoionization detection method are employed to measure the highly excited even-parity states of the Sm atom in the energy region between 36360~cm-1 and 40800~cm-1. Comparisons between the results from the two detection techniques enable us to discriminate the Rydberg states from the valence states in the same energy region with the information of level energies, possible J values and their relative intensities. Furthermore, in the experiment two different excitation schemes are designed to obtain the spectra of highly excited even-parity states of the Sm atom. With a detailed analysis of the experimental data, this work not only confirms the results about many spectral data from the literature with different excitation schemes, but also reports new spectral data on 29 Rydberg states and 23 valence states.

Abstract: In this work, a three-step autoionization detection method and direct photoionization detection method are employed to measure the highly excited even-parity states of the Sm atom in the energy region between 36360 cm-1 and 40800 cm-1. Comparisons between the results from the two detection techniques enable us to discriminate the Rydberg states from the valence states in the same energy region with the information of level energies, possible J values and their relative intensities. Furthermore, in the experiment two different excitation schemes are designed to obtain the spectra of highly excited even-parity states of the Sm atom. With a detailed analysis of the experimental data, this work not only confirms the results about many spectral data from the literature with different excitation schemes, but also reports new spectral data on 29 Rydberg states and 23 valence states.

Key words: Rydberg state, valence state, Sm atom

中图分类号:  (Photoionization of atoms and ions)

  • 32.80.Fb
32.80.Rm (Multiphoton ionization and excitation to highly excited states) 32.80.Zb (Autoionization)