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))
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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