Abstract
Photostimulated desorption of NO and CO chemisorbed on a Pt(001) surface at 80 K has been studied with an ArF excimer laser (hν=6.41 eV) irradiation onto the surface. Desorption of both neutrals and ions was observed. Neutral species were state-selectively detected by the resonanceenhanced multiphoton ionization technique. The yields of NO, NO+, CO and CO+ are proportional to the first, third, third, and ~1.8th powers of laser fluence, respectively. Desorption mechanisms for these species are discussed.
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