Nuclear interference in dissociating of HD{sup +} in ultrashort laser fields

Journal Article · Fri Jul 15 04:00:00 EDT 2011 · Physical Review. A

DOI:https://doi.org/10.1103/PHYSREVA.84.013424· OSTI ID:22051335

Di, Yang ^[1]; Shulin, Cong ^[1]

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1. School of Physics and Optoelectronic Technology, Dalian University of Technology, Dalian 116024 (China)

The dissociation dynamics of HD{sup +} molecules is studied theoretically by numerically solving the time-dependent Schroedinger equation in which the molecular vibrational and rotational degrees of freedom are included. Based on the Born-Oppenheimer approximation, the ground 1s{sigma}{sub g} state and the excited 2p{sigma}{sub u} state are taken into account, corresponding to two dissociative channels HD{sup +}{yields}D + H{sup +} and HD{sup +}{yields}H + D{sup +}, respectively. Two dissociative nuclear wave packets overlap and interfere after excited by two ultrashort laser pulses. The interference patterns can be controlled by varying the laser parameters and the dissociation probabilities are demonstrated for different laser fields. The kinetic energy-dependent distributions of the fragments are calculated using an asymptotic-flow expression in the momentum space. The branching ratio D{sup +}/(H{sup +} + D{sup +}), as a function of the delay time and the relative phase between two laser pulses, is also discussed.

• OSTI ID: 22051335
• Journal Information: Physical Review. A, Journal Name: Physical Review. A Journal Issue: 1 Vol. 84; ISSN 1050-2947; ISSN PLRAAN
• Country of Publication: United States
• Language: English

Related Subjects

71 CLASSICAL AND QUANTUM MECHANICS
GENERAL PHYSICS
74 ATOMIC AND MOLECULAR PHYSICS
ASYMPTOTIC SOLUTIONS
BORN-OPPENHEIMER APPROXIMATION
BRANCHING RATIO
DEGREES OF FREEDOM
DEUTERIUM IONS
HYDROGEN IONS 1 PLUS
INTERFERENCE
KINETIC ENERGY
LASER RADIATION
LASERS
MOLECULES
SCHROEDINGER EQUATION
TIME DEPENDENCE