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Indexed by:期刊论文

Date of Publication:2015-04-01

Journal:LASER PHYSICS LETTERS

Included Journals:SCIE、Scopus

Volume:12

Issue:4

ISSN No.:1612-2011

Key Words:photoassociation; isotope effect; Franck-Condon; HF; DF

Abstract:The photoassociation (PA) reactions of H + F -> HF and D + F -> DF are investigated by using the time-dependent quantum wave packet method. For each system, we consider four cases, where the target state is set to be vertical bar nu = 16, 17, 18, 19 >, respectively. The effects of the initial collision momentum and laser parameters, including intensity, pulse duration, and frequency, on the final association probability are calculated and discussed. It is found that the PA probability for H + F -> HF (vertical bar nu = 16, 17, 18 >) is significantly greater than that for D + F -> DF (vertical bar nu = 16, 17, 18 >), while the PA probability to vertical bar nu = 19 > for the latter system is greater than the former one. This isotope effect has been connected with the Franck-Condon overlap integral between the target vibrational state and the collision continuum state.