SFG spectroscopy of CO/Ni(111): UV pumping and the transient hot band transition of adsorbed CO

Athula Bandara, Satoru S. Kano, Ken Onda, Satoshi Katano, Jun Kubota, Kazunari Domen, Chiaki Hirose, Akihide Wada

研究成果: ジャーナルへの寄稿記事

13 引用 (Scopus)

抄録

A UV excitation by a picosecond pulse at 266 nm induced an unusual shoulder on the v CO = 1 ← 0 resonance peak of CO/Ni(111) monitored by sum-frequency generation (SFG) of visible and IR pulses. The observed line shape was reproduced by the use of a dipole-dipole interaction model with the coherent potential approximation (CPA) where the hot band transition with a population ratio of 0.3 to 0.7 (v = 1 to v = 0) was assumed. Neither the transition to the two-phonon bound state nor the coupling with the low-frequency phonon modes explained the observed changes. The shoulder appeared only during the UV excitation, which indicated that the electronically driven excitation, presumably by the hot electrons generated by the irradiation, dominated the process. As possible mechanisms, the involvement of an intermediate negative ion resonance state and/or the non-adiabatic coupling of electronic states with C-O stretching mode were considered.

元の言語英語
ページ(範囲)1125-1132
ページ数8
ジャーナルBulletin of the Chemical Society of Japan
75
発行部数5
DOI
出版物ステータス出版済み - 5 1 2002

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Carbon Monoxide
Spectroscopy
Hot electrons
Electronic states
Stretching
Negative ions
Irradiation

All Science Journal Classification (ASJC) codes

  • Chemistry(all)

これを引用

SFG spectroscopy of CO/Ni(111) : UV pumping and the transient hot band transition of adsorbed CO. / Bandara, Athula; Kano, Satoru S.; Onda, Ken; Katano, Satoshi; Kubota, Jun; Domen, Kazunari; Hirose, Chiaki; Wada, Akihide.

:: Bulletin of the Chemical Society of Japan, 巻 75, 番号 5, 01.05.2002, p. 1125-1132.

研究成果: ジャーナルへの寄稿記事

Bandara, Athula ; Kano, Satoru S. ; Onda, Ken ; Katano, Satoshi ; Kubota, Jun ; Domen, Kazunari ; Hirose, Chiaki ; Wada, Akihide. / SFG spectroscopy of CO/Ni(111) : UV pumping and the transient hot band transition of adsorbed CO. :: Bulletin of the Chemical Society of Japan. 2002 ; 巻 75, 番号 5. pp. 1125-1132.
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abstract = "A UV excitation by a picosecond pulse at 266 nm induced an unusual shoulder on the v CO = 1 ← 0 resonance peak of CO/Ni(111) monitored by sum-frequency generation (SFG) of visible and IR pulses. The observed line shape was reproduced by the use of a dipole-dipole interaction model with the coherent potential approximation (CPA) where the hot band transition with a population ratio of 0.3 to 0.7 (v = 1 to v = 0) was assumed. Neither the transition to the two-phonon bound state nor the coupling with the low-frequency phonon modes explained the observed changes. The shoulder appeared only during the UV excitation, which indicated that the electronically driven excitation, presumably by the hot electrons generated by the irradiation, dominated the process. As possible mechanisms, the involvement of an intermediate negative ion resonance state and/or the non-adiabatic coupling of electronic states with C-O stretching mode were considered.",
author = "Athula Bandara and Kano, {Satoru S.} and Ken Onda and Satoshi Katano and Jun Kubota and Kazunari Domen and Chiaki Hirose and Akihide Wada",
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T2 - UV pumping and the transient hot band transition of adsorbed CO

AU - Bandara, Athula

AU - Kano, Satoru S.

AU - Onda, Ken

AU - Katano, Satoshi

AU - Kubota, Jun

AU - Domen, Kazunari

AU - Hirose, Chiaki

AU - Wada, Akihide

PY - 2002/5/1

Y1 - 2002/5/1

N2 - A UV excitation by a picosecond pulse at 266 nm induced an unusual shoulder on the v CO = 1 ← 0 resonance peak of CO/Ni(111) monitored by sum-frequency generation (SFG) of visible and IR pulses. The observed line shape was reproduced by the use of a dipole-dipole interaction model with the coherent potential approximation (CPA) where the hot band transition with a population ratio of 0.3 to 0.7 (v = 1 to v = 0) was assumed. Neither the transition to the two-phonon bound state nor the coupling with the low-frequency phonon modes explained the observed changes. The shoulder appeared only during the UV excitation, which indicated that the electronically driven excitation, presumably by the hot electrons generated by the irradiation, dominated the process. As possible mechanisms, the involvement of an intermediate negative ion resonance state and/or the non-adiabatic coupling of electronic states with C-O stretching mode were considered.

AB - A UV excitation by a picosecond pulse at 266 nm induced an unusual shoulder on the v CO = 1 ← 0 resonance peak of CO/Ni(111) monitored by sum-frequency generation (SFG) of visible and IR pulses. The observed line shape was reproduced by the use of a dipole-dipole interaction model with the coherent potential approximation (CPA) where the hot band transition with a population ratio of 0.3 to 0.7 (v = 1 to v = 0) was assumed. Neither the transition to the two-phonon bound state nor the coupling with the low-frequency phonon modes explained the observed changes. The shoulder appeared only during the UV excitation, which indicated that the electronically driven excitation, presumably by the hot electrons generated by the irradiation, dominated the process. As possible mechanisms, the involvement of an intermediate negative ion resonance state and/or the non-adiabatic coupling of electronic states with C-O stretching mode were considered.

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