title: Multiphoton double ionization via field-independent resonant excitation.
abstract: The double ionization of xenon in the multiphoton regime has been studied at two wavelengths (0.77 and 0.79 microm) using an electron-ion coincidence technique and an intensity binned ion ratio method. Sharp resonant structures in the electron energy distribution correlated with the doubly charged ion, as well as a wavelength dependence of the Xe(2+)/Xe(+) ratio provides new insights. A mechanism involving the shelving of population in Rydberg states followed by excitation of a core electron is proposed.
authors.affiliation: Chemistry Department, Brookhaven National Laboratory, Upton, New York 11973, USA.
authors.forename: J
authors.initials: J
authors.lastname: Rudati
authors.forename: J L
authors.initials: JL
authors.lastname: Chaloupka
authors.forename: P
authors.initials: P
authors.lastname: Agostini
authors.forename: K C
authors.initials: KC
authors.lastname: Kulander
authors.forename: L F
authors.initials: LF
authors.lastname: DiMauro