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.

arXiv comment25 pages, 8 figures

References in corpus (7)

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Cited by in corpus (16)

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• Inter- and intracycle interference effects in strong-field dissociative ionization
• Strong-Field Polarizability-Enhanced Dissociative Ionization
• An optimized absorbing potential for ultrafast, strong-field problems
• Attosecond transient-absorption spectroscopy of polar molecules
• Characterization of Molecular Breakup by Very Intense Femtosecond XUV Laser Pulses
• Dissociative ionization of H${}_2^{+}$: Few-cycle effect in the joint electron-ion energy spectrum
• A quantum simulation of dissociative ionization of $H_2^{+}$ in full dimensionality with time dependent surface flux method
• Laser-induced dissociative ionization of H${}_2$ from the near-infrared to the mid-infrared regime
• Absorption and analysis of unbound quantum particles -- one by one
• Probing the role of excited states in ionization of acetylene
• Theoretical investigation of the Freeman resonance in the dissociative ionization of $H_2+$
• Revealing and controlling nuclear dynamics following inner-shell photoionization of N2