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Acta Physica Sinica (Overseas Edition), 1997, Vol. 6(2): 81-91    DOI: 10.1088/1004-423X/6/2/001
ATOMIC AND MOLECULAR PHYSICS   Next  

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)
Department of Chemical Physics, University of Science and Technology of China, Hefei 230026, China
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.
Received:  03 April 1996      Accepted manuscript online: 
PACS:  33.80.Rv (Multiphoton ionization and excitation to highly excited states (e.g., Rydberg states))  
  33.80.Wz (Other multiphoton processes)  
  33.50.Dq (Fluorescence and phosphorescence spectra)  
Fund: Project supported by the National Natural Science Foundation of China.

Cite this article: 

RAN QIN (冉琴), ZHANG LI-MIN (张立敏), DAI JING-HUA (戴静华), MA XING-XIAO (马兴孝) AN APPROACH OF ESTIMATING EXCITATION CROSS SECTIONS IN MULTIPHOTON PROCESSES 1997 Acta Physica Sinica (Overseas Edition) 6 81

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