title: Coincident fragment detection in strong field photoionization and dissociation of H2.
abstract: Electron-ion momentum spectroscopy is used to investigate the correlated electronic and nuclear motion in fragmentation of H2 in 4 x 10(14) W/cm(2), 25 fs laser pulses at 795 nm. Reaction channel dependent photoelectron spectra indicate that besides the main, stepwise H2 ionization H2(+) dissociation mechanism resulting in the products H(1s) + H(+) + e(-) a second new mechanism has to be assumed. The momentum distribution of H(+) ions in the dissociation channels H(1s) + H(+) + e(-) and 2H(+) + 2e(-) is found to be independent of the kinetic energy of the photoelectrons.
authors.affiliation: Max-Born-Institut, Max-Born-Strasse 2a, D-12489 Berlin, Germany.
authors.forename: H
authors.initials: H
authors.lastname: Rottke
authors.forename: C
authors.initials: C
authors.lastname: Trump
authors.forename: M
authors.initials: M
authors.lastname: Wittmann
authors.forename: G
authors.initials: G
authors.lastname: Korn
authors.forename: W
authors.initials: W
authors.lastname: Sandner
authors.forename: R
authors.initials: R
authors.lastname: Moshammer
authors.forename: A
authors.initials: A
authors.lastname: Dorn
authors.forename: C D
authors.initials: CD
authors.lastname: Schröter
authors.forename: D
authors.initials: D
authors.lastname: Fischer
authors.forename: J R Crespo
authors.initials: JR
authors.lastname: Lopez-Urrutia
authors.forename: P
authors.initials: P
authors.lastname: Neumayer
authors.forename: J
authors.initials: J
authors.lastname: Deipenwisch
authors.forename: C
authors.initials: C
authors.lastname: Höhr
authors.forename: B
authors.initials: B
authors.lastname: Feuerstein
authors.forename: J
authors.initials: J
authors.lastname: Ullrich