Motional narrowing in the v1/2v2 fermi resonance diad of CO2

Jan Baran, A. Grofcsik, W. Jeremy Jones

Research output: Contribution to journalArticle

25 Citations (Scopus)

Abstract

Studies of the v1 and 2v2 Q branches in the Raman spectrum of carbon dioxide have been carried out at a resolution of ˜30 MHz using the methods of Raman Amplification (Raman Gain) Spectroscopy. The v1 band at 1286 cm-1 is not resolved at atmospheric pressure. The 2v2 band, although similarly unresolved over the pressure range 120-760 Torr, is extremely narrow with a full width at half maximum (0.0076 cm-1 at 760 Torr) which is comparable with the Doppler width of a single transition and very markedly narrower than the width that would be expected of a single rotational S or O branch line at this pressure. This result is attributed to the effects of motional narrowing, which are thought to be very pronounced for 2v2 because of the near coincidence of the individual J components within the Q branch.

Original languageEnglish
Pages (from-to)1291-1297
Number of pages7
JournalMolecular Physics
Volume45
Issue number6
DOIs
Publication statusPublished - Apr 20 1982

Fingerprint

Nijmegen Breakage Syndrome
Pressure
Atmospheric Pressure
Raman Spectrum Analysis
Full width at half maximum
Carbon Dioxide
Atmospheric pressure
Amplification
Raman scattering
Spectroscopy
carbon dioxide
atmospheric pressure
Raman spectra
spectroscopy

ASJC Scopus subject areas

  • Biophysics
  • Molecular Biology
  • Physical and Theoretical Chemistry
  • Condensed Matter Physics

Cite this

Motional narrowing in the v1/2v2 fermi resonance diad of CO2 . / Baran, Jan; Grofcsik, A.; Jones, W. Jeremy.

In: Molecular Physics, Vol. 45, No. 6, 20.04.1982, p. 1291-1297.

Research output: Contribution to journalArticle

Baran, Jan ; Grofcsik, A. ; Jones, W. Jeremy. / Motional narrowing in the v1/2v2 fermi resonance diad of CO2 In: Molecular Physics. 1982 ; Vol. 45, No. 6. pp. 1291-1297.
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