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Indexed by:期刊论文

Date of Publication:2017-07-26

Journal:PHYSICAL REVIEW A

Included Journals:SCIE、EI、Scopus

Volume:96

Issue:1

ISSN No.:2469-9926

Abstract:The dissociation of the molecular ion HD+ in moderate-intensity laser pulses is studied using the timedependent quantum wave-packet method. Simulations of the time-of-flight (TOF) neutral atom spectra produced from dissociation of the v = 10 vibrational state at a laser intensity of 10(12)W/cm(2) and from v = 0 at the intensity of 5x10(12)W/cm(2) are calculated. Good agreement is found with previous experimental results [P. A. Orr et al., Phys. Rev. Lett. 98, 163001 (2007) and J. D. Alexander et al., J. Phys. B 42, 154027 (2009)]. Furthermore, the kinetic energy distribution of the dissociated fragments of molecular ion HD+ is studied within the moderate laser-intensity region from 10(12) to 5x10(12)W/cm(2) by considering initial vibrational states from v = 0 to 15. It is found that the above-threshold dissociation could be more obviously observed from the TOF spectra when the initial vibrational state is set as v = 6 for a moderate-intensity femtosecond laser field.