Molecules in intense laser fields: Enhanced ionization in a one-dimensional model of H{sub 2}

Journal Article · Tue Oct 01 04:00:00 EDT 1996 · Physical Review A

DOI:https://doi.org/10.1103/PhysRevA.54.3290· OSTI ID:385698

Yu, H; Zuo, T; Bandrauk, A D ^[1]

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1. Laboratoire de Chimie Theorique, Faculte des sciences, Universite de Sherbrooke, Sherbrooke, Quebec, J1K 2R1 (CANADA)

A one-dimensional model of H{sub 2} is used to examine the nonlinear behavior of a pair of electrons in the presence of intense laser fields and fixed nuclei. We present ionization rates of H{sub 2} at different frequencies and intensities of short intense electromagnetic pulses by solving exactly the time-dependent Schr{umlt o}dinger equation for the above system as a function of internuclear distance. Anomalously high ionization rates are found at large critical internuclear separations, akin to similar results found previously in the one-electron molecule {ital H}{sub 2}{sup +}. Independent one-electron and simultaneous two-electron ionizations are identified from the numerical simulations to occur at different intensities and frequencies. Field-induced barrier suppression models are shown to explain qualitatively the numerical results. {copyright} {ital 1996 The American Physical Society.}

• OSTI ID: 385698
• Journal Information: Physical Review A, Journal Name: Physical Review A Journal Issue: 4 Vol. 54; ISSN 1050-2947; ISSN PLRAAN
• Country of Publication: United States
• Language: English

Related Subjects

66 PHYSICS
HYDROGEN
HYDROGEN IONS 2 PLUS
HYDROGEN MOLECULES
LASER RADIATION
MULTI-PHOTON PROCESSES
PHOTOIONIZATION
PHOTON-ATOM COLLISIONS