Breakup of H${}_2^{+}$ by photon impact

Abstract

Total and partial cross sections for breakup of ground rovibronic state of H${}_2^{+}$by photon impact are calculated using the exact nonadiabatic nonrelativistic Hamiltonian without approximation. The converged results span six orders of magnitude. The breakup cross section is divided into dissociative excitation and dissociative ionization. The dissociative excitation channels are divided into contributions from principal quantum numbers 1 through 4. For dissociative ionization the kinetic energy sharing is calculated using a formally exact expression. These results are compared with approximate expressions, and it is shown that the Born-Oppenheimer result is surprisingly accurate, whereas using Born-Oppenheimer final states to extract the cross sections from the full nonadiabatic wave function produces pathologies near threshold.

Submitted to PRA

References in corpus (3)

• Attosecond streaking of correlated two-electron transitions in helium
• Photoionization of helium by attosecond pulses: extraction of spectra from correlated wave functions
• Wavelength dependence of electron localization in the laser-driven dissociation of H${}_2^{+}$

Cited by in corpus (3)

• Tracking the photodissociation probability of D${}_2^{+}$ induced by linearly chirped laser pulses
• Photoionization from the ground and excited vibrational states of H+2 and its deuterated isotopologues
• Towards the full quantum dynamical description of photon induced processes in ${\mathrm{D}}_2^{+}$