Vibrational excitation of CO molecules by infrared free electron laser

Y. Ogi, T. Endo, K. Tsukiyama, Hiroshi Kondoh, K. Tono, Y. Ogawa, Y. Hamada, T. Ohta, H. Kuroda

Research output: Contribution to journalArticle

3 Citations (Scopus)

Abstract

This paper describes the vibrational excitation of CO molecules by FEL-SUT (Free Electron Laser at Tokyo University of Science). FEL is tuned to 4.67 μm, corresponding to the X1Σ+(v″ = 1)←(v″ = 0) transition of CO. The population of the vibrationally excited states is probed by the (2 + 1) resonance enhanced multiphoton ionization technique via the B1Σ+ Rydberg state. We find that ∼10% of the population in v″ = 0 is excited to v″ = 1. In spite of the existence of the resonant vibrational ladder climbing channels via specific rotational levels, no signal originating from v″ = 2 is detectable. The predissociation in the B1Σ+(v′ = 2) state is believed to be responsible for the absence of CO+ signals.

Original languageEnglish
Pages (from-to)67-73
Number of pages7
JournalJournal of Electron Spectroscopy and Related Phenomena
Volume128
Issue number1
DOIs
Publication statusPublished - 2003 Jan
Externally publishedYes

Fingerprint

Infrared lasers
Free electron lasers
Carbon Monoxide
free electron lasers
infrared lasers
Molecules
Rydberg states
ladders
excitation
molecules
Ladders
Excited states
ionization
Ionization

Keywords

  • CO
  • Free electron laser
  • REMPI
  • Vibrational excitation

ASJC Scopus subject areas

  • Physical and Theoretical Chemistry
  • Spectroscopy
  • Atomic and Molecular Physics, and Optics
  • Surfaces and Interfaces

Cite this

Vibrational excitation of CO molecules by infrared free electron laser. / Ogi, Y.; Endo, T.; Tsukiyama, K.; Kondoh, Hiroshi; Tono, K.; Ogawa, Y.; Hamada, Y.; Ohta, T.; Kuroda, H.

In: Journal of Electron Spectroscopy and Related Phenomena, Vol. 128, No. 1, 01.2003, p. 67-73.

Research output: Contribution to journalArticle

Ogi, Y, Endo, T, Tsukiyama, K, Kondoh, H, Tono, K, Ogawa, Y, Hamada, Y, Ohta, T & Kuroda, H 2003, 'Vibrational excitation of CO molecules by infrared free electron laser', Journal of Electron Spectroscopy and Related Phenomena, vol. 128, no. 1, pp. 67-73. https://doi.org/10.1016/S0368-2048(02)00211-6
Ogi, Y. ; Endo, T. ; Tsukiyama, K. ; Kondoh, Hiroshi ; Tono, K. ; Ogawa, Y. ; Hamada, Y. ; Ohta, T. ; Kuroda, H. / Vibrational excitation of CO molecules by infrared free electron laser. In: Journal of Electron Spectroscopy and Related Phenomena. 2003 ; Vol. 128, No. 1. pp. 67-73.
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AU - Endo, T.

AU - Tsukiyama, K.

AU - Kondoh, Hiroshi

AU - Tono, K.

AU - Ogawa, Y.

AU - Hamada, Y.

AU - Ohta, T.

AU - Kuroda, H.

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