Prevalence of different double ionization pathways and traces of three-body collisions in strongly driven Helium
arXiv:1011.1460 · doi:10.1103/PhysRevA.83.023403
Abstract
We present a unified treatment of the prevalence of different double ionization (DI) pathways as a function of the sum of the final electron energies in strongly driven Helium. We do so as a function of laser frequency and intensity. At small total energy a new DI pathway prevails where both electrons are ionized with a delay after re-collision. We find that three-body collisions between the two electrons and the nucleus underly this pathway--we refer to it as triple collision (TC) pathway. At high total energy the pathway that prevails is the one where one electron is ionized with a delay following re-collision---we refer to it as Delayed pathway. Asymptotic observables that trace the prevalence of the latter pathways are identified.
References in corpus (5)
- Classical Trajectory Diagnosis of Finger-Like Pattern in the Correlated Electron Momentum Distribution for Helium Double Ionization
- Laser-induced nonsequential double ionization at and above the recollision-excitation-tunneling threshold
- Time resolved quantum dynamics of double ionization in strong laser fields
- Recoil collisions as a portal to field assisted ionization at near-UV frequencies in the Strong Field Double Ionization of Helium
- Intensity dependence of strong field double ionization mechanisms: from field-assisted recollision ionization to recollision-assisted field ionization