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

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 (TDSE) 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.

25 pages, 8 figures

References in corpus (2)

• Nonsequential two-photon double ionization of helium
• Multiple Ionization Bursts in Laser-Driven Hydrogen Molecular Ion

Cited by in corpus (4)

• Calculation of photoelectron spectra within the time-dependent configuration interaction singles scheme
• Nuclear-Motion Effects in Attosecond Transient Absorption Spectroscopy of Molecules
• Dissociative ionization of H2+ using intense femtosecond XUV laser pulses
• Laser-induced dissociative ionization of H${}_2$ from the near-infrared to the mid-infrared regime