中国物理B ›› 1999, Vol. 8 ›› Issue (2): 131-135.doi: 10.1088/1004-423X/8/2/006

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A NONLINEAR MODEL FOR HIGHLY EXCITED VIBRATIONAL ENERGY LEVELS OF SILANE

陈向荣, 程艳, 罗俊, 芶清泉, 庞小峰   

  1. Institute of Atomic and Molecular Physics, Sichuan University, Chengdu 610065, China
  • 收稿日期:1998-09-02 修回日期:1998-10-26 出版日期:1999-02-15 发布日期:1999-02-20
  • 基金资助:
    Project supported by the National Natural Science Foundation of China (Grant No.29673028) and by the Youth Science Research Foundation of Sichuan University (Grant No. 1998-37), China.

A NONLINEAR MODEL FOR HIGHLY EXCITED VIBRATIONAL ENERGY LEVELS OF SILANE

Chen Xiang-rong (陈向荣), Cheng Yan (程艳), Luo Jun (罗俊), Gou Qing-quan (芶清泉), Pang Xiao-feng (庞小峰)   

  1. Institute of Atomic and Molecular Physics, Sichuan University, Chengdu 610065, China
  • Received:1998-09-02 Revised:1998-10-26 Online:1999-02-15 Published:1999-02-20
  • Supported by:
    Project supported by the National Natural Science Foundation of China (Grant No.29673028) and by the Youth Science Research Foundation of Sichuan University (Grant No. 1998-37), China.

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摘要： The highly excited vibrational energy levels of SiH stretches of silane SiH4 in the electronic ground state are calculated using a three-parameter nonlinear model, i.e., the quantized discrete self-trapping equation. The obtained results are in good agreements with the experimental data and with those obtained from local mode calculations of others. We note that SiH4 molecule is a typical molecule close to the local mode limit, and that when n≥3, the molecule could be thought of as vibrating with the four SiH stretching quanta trapped into a single SiH bond.

Abstract: The highly excited vibrational energy levels of SiH stretches of silane SiH4 in the electronic ground state are calculated using a three-parameter nonlinear model, i.e., the quantized discrete self-trapping equation. The obtained results are in good agreements with the experimental data and with those obtained from local mode calculations of others. We note that SiH4 molecule is a typical molecule close to the local mode limit, and that when n≥3, the molecule could be thought of as vibrating with the four SiH stretching quanta trapped into a single SiH bond.

中图分类号:  (Vibrational analysis)

  • 33.20.Tp
33.15.Mt (Rotation, vibration, and vibration-rotation constants) 34.50.-s (Scattering of atoms and molecules)