title: Recollision dynamics and time delay in strong-field double ionization.
abstract: Three-dimensional classical ensembles are employed to study recollision dynamics in double ionization of atoms by 780-nm intense lasers. After recollision one electron typically remains bound to the atom for a portion of a laser cycle, during which time the nucleus strongly influences its direction of motion. The electron then escapes over a suppressed barrier, with its final momentum depending critically on the laser phase at escape. The other electron remains unbound after collision, and typically drifts out in a momentum hemisphere opposite from its motion just after the collision. Several example trajectories at intensity 0.4 PW/cm(2) with various time delays between recollision and ionization are presented.
authors.forename: S L
authors.initials: SL
authors.lastname: Haan
authors.forename: L
authors.initials: L
authors.lastname: Breen
authors.forename: A
authors.initials: A
authors.lastname: Karim
authors.forename: J H
authors.initials: JH
authors.lastname: Eberly