中国物理B ›› 2004, Vol. 13 ›› Issue (6): 845-849.doi: 10.1088/1009-1963/13/6/010

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Radiative lifetimes of Rydberg 6pnd J=2 states of Pb I by multichannel quantum defect theory

蒋红玫1, 戴振文2, 孙桂娟2, 蒋占魁3   

  1. (1)College of Physics, Jilin University, Changchun 130023, China; (2)College of Physics, Jilin University, Changchun 130023, China; Key Laboratory of Coherent Light, Atomic and Molecular Spectroscopy, Ministry of Education of China, Changchun 130023, China; (3)College of Physics, Jilin University, Changchun 130023, China; Key Laboratory of Coherent Light, Atomic and Molecular Spectroscopy, Ministry of Education of China, Changchun 130023, China; College of Photoelectronic Information, Yantai University, Yantai
  • 收稿日期:2003-11-05 修回日期:2003-12-14 出版日期:2004-07-05 发布日期:2005-07-05
  • 基金资助:
    Project supported by the National Natural Science Foundation of China (Grant No 19774026).

Radiative lifetimes of Rydberg 6pnd J=2 states of Pb I by multichannel quantum defect theory

Dai Zhen-Wen (戴振文)ab, Jiang Hong-Mei (蒋红玫)a, Sun Gui-Juan (孙桂娟)ab, Jiang Zhan-Kui (蒋占魁)abc   

  1. a College of Physics, Jilin University, Changchun 130023, China; b Key Laboratory of Coherent Light, Atomic and Molecular Spectroscopy, Ministry of Education of China, Changchun 130023, China; c College of Photoelectronic Information, Yantai University, Yantai 264005, China
  • Received:2003-11-05 Revised:2003-12-14 Online:2004-07-05 Published:2005-07-05
  • Supported by:
    Project supported by the National Natural Science Foundation of China (Grant No 19774026).

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摘要： Energy levels of the odd-parity 6pnd J=2 Rydberg states of Pb I are analysed by the multichannel quantum defect theory (MQDT) in the frame of a five-channel three-limit calculation model. With optimal MQDT parameters, channel admixture coefficients are obtained and used to calculate the theoretical lifetimes of the levels by comparing to the previously measured lifetimes. The predicted lifetimes for higher-lying Rydberg states are given and discussed. These predicted lifetimes are very different from those obtained by the four-channel two-limit model previously used, which means that introduction of the additional interacting channel is important for studying the 6pnd J=2 Rydberg states of Pb I.

关键词: radiative lifetime, Rydberg state, lead atom, multichannel quantum defect theory

Abstract: Energy levels of the odd-parity 6pnd J=2 Rydberg states of Pb I are analysed by the multichannel quantum defect theory (MQDT) in the frame of a five-channel three-limit calculation model. With optimal MQDT parameters, channel admixture coefficients are obtained and used to calculate the theoretical lifetimes of the levels by comparing to the previously measured lifetimes. The predicted lifetimes for higher-lying Rydberg states are given and discussed. These predicted lifetimes are very different from those obtained by the four-channel two-limit model previously used, which means that introduction of the additional interacting channel is important for studying the 6pnd J=2 Rydberg states of Pb I.

Key words: radiative lifetime, Rydberg state, lead atom, multichannel quantum defect theory

中图分类号:  (Oscillator strengths, lifetimes, transition moments)

  • 32.70.Cs
32.70.Fw (Absolute and relative intensities) 31.50.Df (Potential energy surfaces for excited electronic states)