Dissociation and dissociative ionization of H2+ using the time-dependent surface flux method

Lun Yue and Lars Bojer Madsen
Phys. Rev. A 88, 063420 – Published 27 December 2013

Abstract

The time-dependent surface flux method developed for the description of electronic spectra [L. Tao and A. Scrinzi, New J. Phys. 14, 013021 (2012); A. Scrinzi, New J. Phys. 14, 085008 (2012)] is extended to treat dissociation and dissociative ionization processes of H2+ interacting with strong laser pulses. By dividing the simulation volume into proper spatial regions associated with the individual reaction channels and monitoring the probability flux, the joint energy spectrum for the dissociative ionization process and the energy spectrum for dissociation is obtained. The methodology is illustrated by solving the time-dependent Schrödinger equation for a collinear one-dimensional model of H2+ with electronic and nuclear motions treated exactly and validated by comparison with published results for dissociative ionization. The results for dissociation are qualitatively explained by analysis based on dressed diabatic Floquet potential energy curves, and the method is used to investigate the breakdown of the two-surface model.

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  • Received 11 October 2013

DOI:https://doi.org/10.1103/PhysRevA.88.063420

©2013 American Physical Society

Authors & Affiliations

Lun Yue and Lars Bojer Madsen

  • Department of Physics and Astronomy, Aarhus University, DK-8000 Aarhus C, Denmark

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Issue

Vol. 88, Iss. 6 — December 2013

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