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论文类型：期刊论文

发表时间：2013-01-14

发表刊物：JOURNAL OF CHEMICAL PHYSICS

收录刊物：SCIE、EI、PubMed、Scopus

卷号：138

期号：2

页面范围：024304

ISSN号：0021-9606

摘要：The multi-photon dissociation of HCl+ through three channels HCl+ -> H(1s vertical bar S-2) + Cl+(P-3), H+ + Cl(P-2(0)), and H(S-2) + Cl+(D-1) steered by intense femtosecond laser pulses are investigated theoretically using the quantum wave packet dynamics. The numerical calculations are performed in two cases without and with the coupling between the excited states. The results show that the dissociation is sensitive to the duration tau, peak intensity I-0, and the resonance of driving laser fields. In the case without the coupling, the effect of the permanent dipole moments on the dissociations dominates for tau < 15 fs, while with the increase of tau, the dissociation dynamics is mainly dominated by the transition dipole moment. In the case with the coupling, the above-threshold dissociation process is complex, and the non-resonant (lambda = 400 nm) and resonant (lambda = 800 and 1200 nm) laser fields lead to different variation of the branching ratios. The angle-resolved energy distribution is also discussed in detail. (C) 2013 American Institute of Physics. [http://dx.doi.org/10.1063/1.4773022]