Surface-reconstruction-switched adsorbate photofragmentation dynamics.
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.
Camillone
N
N
Columbia Radiation Laboratory, Columbia University, New York, New York 10027, USA. nicholas@bnl.gov
Khan
K A
KA
Yarmoff
J A
JA
Osgood
R M
RM