A re-examination of the 4051 Å band of C3 using cavity ringdown spectroscopy of a supersonic plasma

B. J. McCall, R. N. Casaes, M. Ádámkovics, R. J. Saykally

Research output: Contribution to journalArticlepeer-review

Abstract

The C3 molecule is of fundamental interest to chemists, both as the simplest cumulene and as a prototypical nonrigid system. It is also of great importance in astrophysics, as it now serves as a remote diagnostic of the temperature and density of interstellar clouds. However, high resolution astronomical spectra have uncovered a discrepancy between the observed R (0) transition and the laboratory spectrum. We have used cavity ringdown spectroscopy to obtain a high resolution, low temperature spectrum of the 4051 Å band, and have confirmed that the R (0) transition was incorrectly assigned in previous laboratory work.

Original languageEnglish (US)
Pages (from-to)583-586
Number of pages4
JournalChemical Physics Letters
Volume374
Issue number5-6
DOIs
StatePublished - Jun 18 2003

ASJC Scopus subject areas

  • General Physics and Astronomy
  • Physical and Theoretical Chemistry

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