Abstract
Photostimulated desorption of NO chemisorbed on a Pt ( 100) surface at 80 and 300 K has been studied with an ArF excimer laser (λ = 193 nm) and a positive-ion measurement system. NO+ is the only ion species observed when a NO-saturated Pt( 100) surface is irradiated with laser light. The NO+ yield is proportional to the third power of laser fluence. The translational-energy distribution of the NO+ ions is independent of laser fluence. We propose a two-step model as the most probable NO+ formation mechanism. The first step is desorption of neutral NO induced by valence-electron excitation in chemisorbed NO with one-photon absorption. Then, the desorbed NO is ionized in the vicinity of the surface via the two-photon nonresonant ionization process. Relatively large desorption cross sections estimated from the decay of the NO+ yield support the above NO + formation mechanism.
| Original language | English |
|---|---|
| Pages (from-to) | 590-597 |
| Number of pages | 8 |
| Journal | The Journal of Chemical Physics |
| Volume | 91 |
| Issue number | 1 |
| DOIs | |
| Publication status | Published - Jan 1 1989 |
| Externally published | Yes |
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All Science Journal Classification (ASJC) codes
- Physics and Astronomy(all)
- Physical and Theoretical Chemistry
Cite this
Photostimulated desorption of NO chemisorbed on Pt(100) at 193 nm. / Mase, Kazuhiko; Mizuno, Seigi; Yamada, Masamichi; Doi, Lchiro; Katsumi, Tohru; Watanabe, Shuntaro; Achiba, Yohji; Murata, Yoshitada.
In: The Journal of Chemical Physics, Vol. 91, No. 1, 01.01.1989, p. 590-597.Research output: Contribution to journal › Article
}
TY - JOUR
T1 - Photostimulated desorption of NO chemisorbed on Pt(100) at 193 nm
AU - Mase, Kazuhiko
AU - Mizuno, Seigi
AU - Yamada, Masamichi
AU - Doi, Lchiro
AU - Katsumi, Tohru
AU - Watanabe, Shuntaro
AU - Achiba, Yohji
AU - Murata, Yoshitada
PY - 1989/1/1
Y1 - 1989/1/1
N2 - Photostimulated desorption of NO chemisorbed on a Pt ( 100) surface at 80 and 300 K has been studied with an ArF excimer laser (λ = 193 nm) and a positive-ion measurement system. NO+ is the only ion species observed when a NO-saturated Pt( 100) surface is irradiated with laser light. The NO+ yield is proportional to the third power of laser fluence. The translational-energy distribution of the NO+ ions is independent of laser fluence. We propose a two-step model as the most probable NO+ formation mechanism. The first step is desorption of neutral NO induced by valence-electron excitation in chemisorbed NO with one-photon absorption. Then, the desorbed NO is ionized in the vicinity of the surface via the two-photon nonresonant ionization process. Relatively large desorption cross sections estimated from the decay of the NO+ yield support the above NO + formation mechanism.
AB - Photostimulated desorption of NO chemisorbed on a Pt ( 100) surface at 80 and 300 K has been studied with an ArF excimer laser (λ = 193 nm) and a positive-ion measurement system. NO+ is the only ion species observed when a NO-saturated Pt( 100) surface is irradiated with laser light. The NO+ yield is proportional to the third power of laser fluence. The translational-energy distribution of the NO+ ions is independent of laser fluence. We propose a two-step model as the most probable NO+ formation mechanism. The first step is desorption of neutral NO induced by valence-electron excitation in chemisorbed NO with one-photon absorption. Then, the desorbed NO is ionized in the vicinity of the surface via the two-photon nonresonant ionization process. Relatively large desorption cross sections estimated from the decay of the NO+ yield support the above NO + formation mechanism.
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U2 - 10.1063/1.457445
DO - 10.1063/1.457445
M3 - Article
AN - SCOPUS:0009408932
VL - 91
SP - 590
EP - 597
JO - Journal of Chemical Physics
JF - Journal of Chemical Physics
SN - 0021-9606
IS - 1
ER -