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Indexed by:期刊论文

Date of Publication:2016-06-01

Journal:CHINESE JOURNAL OF CHEMICAL PHYSICS

Included Journals:SCIE

Volume:29

Issue:3

Page Number:297-302

ISSN No.:1674-0068

Key Words:Population transfer; Two-photon resonance transition; Isotope effects; DF

Abstract:The isotope effects of XF (X=H, D) on the population transfer process via two-photon resonance excitation are investigated by solving the time-dependent Schrodinger equation. The vibrational levels upsilon = 0 and 2 of the ground electronic state are taken to be the initial and target states, respectively, for the two molecular systems. The influences of the field peak amplitude and pulse duration on the population transfer process are discussed in detail. The pulse duration is required to be longer than 860 fs for the DF molecule to achieve a relatively high transfer probability (more than 80%), while the one for the HF molecule is just required to be longer than 460 fs. Moreover, the intermediate level upsilon = 1 and the higher level upsilon = 3 may play more important roles in the two-photon resonance process for the DF molecule, compared to the roles in the process for the HF molecule.