Electron-transfermediated and direct surface photochemistry: Cl on Ni(111)

EP Marsh, TL Gilton, W Meier, MR Schneider… - Physical review …, 1988 - APS
EP Marsh, TL Gilton, W Meier, MR Schneider, JP Cowin
Physical review letters, 1988APS
Direct photolysis and electron-induced fragmentation of CH 3 Cl on a Ni (111) surface was
observed in time-of-flight studies using 193-nm radiation. With 248-nm radiation, only
electron-induced fragmentation was observed. With 351-nm radiation no fragments were
observed. The electron-induced process was surface specific, occurring within a limited
adsorbate thickness determined by the penetration depth of the excited substrate electrons
into the adsorbate. Cross sections are reported as a function of coverage.
Abstract
Direct photolysis and electron-induced fragmentation of CH 3 Cl on a Ni (111) surface was observed in time-of-flight studies using 193-nm radiation. With 248-nm radiation, only electron-induced fragmentation was observed. With 351-nm radiation no fragments were observed. The electron-induced process was surface specific, occurring within a limited adsorbate thickness determined by the penetration depth of the excited substrate electrons into the adsorbate. Cross sections are reported as a function of coverage.
American Physical Society
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