Collision-induced desorption in 193-nm photoinduced reactions in (O2+CO) adlayers on Pt(112)

概要

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The spatial distribution of desorbing O2 and CO2 was examined in 193-nm photoinduced reactionsin O2+CO adlayers on stepped Pt(112)=[(s)3(111)x(001)]. The O2 desorption collimated ininclined ways in the plane along the surface trough, confirming the hot-atom collision mechanism.In the presence of CO(a), the product CO2 desorption also collimated in an inclined way, whereasthe inclined O2 desorption was suppressed. The inclined O2 and CO2 desorption is explained by acommon collision-induced desorption model. At high O2 coverage, the CO2 desorption collimatedclosely along the (111) terrace normal.
American Institute of Physicsの論文