title: Surface-reconstruction-switched adsorbate photofragmentation dynamics.
abstract: Energy-resolved angular distributions of neutral fragments ejected during photoinduced electron transfer reaction of CH3Br on GaAs(100) exhibit three distinct methyl-radical ejection channels. These undergo marked changes when the termination is switched from the Ga-rich c(8 x 2) to the As-rich c(2 x 8). Our observations are consistent with a strong adsorption-site dependence of the dynamics.
authors.affiliation: Columbia Radiation Laboratory, Columbia University, New York, New York 10027, USA. nicholas@bnl.gov
authors.forename: N
authors.initials: N
authors.lastname: Camillone
authors.forename: K A
authors.initials: KA
authors.lastname: Khan
authors.forename: J A
authors.initials: JA
authors.lastname: Yarmoff
authors.forename: R M
authors.initials: RM
authors.lastname: Osgood