Abstract
Photostimulated desorption of NO chemisorbed on Pt(001) at 80 K has been studied by the (1+1)-resonance-enhanced multiphoton ionization technique. A linearly polarized ArF excimer laser (λ=193 nm, 6.41 eV) is used as the pump laser. The NO desorption yield increases drastically when the amount of NO exposure exceeds ∼1.8 L. This result shows that the amount of NO species with a large cross section for photostimulated desorption increases drastically at higher NO coverages.
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