中国物理B ›› 1997, Vol. 6 ›› Issue (2): 81-91.doi: 10.1088/1004-423X/6/2/001

• ATOMIC AND MOLECULAR PHYSICS •    下一篇

AN APPROACH OF ESTIMATING EXCITATION CROSS SECTIONS IN MULTIPHOTON PROCESSES

冉琴, 张立敏, 戴静华, 马兴孝   

  1. Department of Chemical Physics, University of Science and Technology of China, Hefei 230026, China
  • 收稿日期:1996-04-03 出版日期:1997-02-20 发布日期:1997-02-20
  • 基金资助:
    Project supported by the National Natural Science Foundation of China.

AN APPROACH OF ESTIMATING EXCITATION CROSS SECTIONS IN MULTIPHOTON PROCESSES

RAN QIN (冉琴), ZHANG LI-MIN (张立敏), DAI JING-HUA (戴静华), MA XING-XIAO (马兴孝)   

  1. Department of Chemical Physics, University of Science and Technology of China, Hefei 230026, China
  • Received:1996-04-03 Online:1997-02-20 Published:1997-02-20
  • Supported by:
    Project supported by the National Natural Science Foundation of China.

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摘要： We suggest a simple approach to roughly estimate the excitation cross sections of various steps in a multiphoton ionization (or dissociation) process by applying the measured dependence of product signal on laser intensity. The validity of this method is demonstrated theoretically by means of the rate equations based upon a two-step kinetic model and can, in principle, be extended to the multiphoton process with steps more than two. Some results of numerical test and experiment are quoted.

Abstract: We suggest a simple approach to roughly estimate the excitation cross sections of various steps in a multiphoton ionization (or dissociation) process by applying the measured dependence of product signal on laser intensity. The validity of this method is demonstrated theoretically by means of the rate equations based upon a two-step kinetic model and can, in principle, be extended to the multiphoton process with steps more than two. Some results of numerical test and experiment are quoted.

中图分类号:  (Multiphoton ionization and excitation to highly excited states (e.g., Rydberg states))

  • 33.80.Rv
33.80.Wz (Other multiphoton processes) 33.50.Dq (Fluorescence and phosphorescence spectra)