The Ã1Πu, 0 1 1 (Δu) vibrational level of C3

K. S. Chen, G. Zhang, A. J. Merer, Y. C. Hsu, W. J. Chen

Research output: Contribution to journalArticlepeer-review

3 Scopus citations


A new band at 23 390 cm-1 in the Ã1Π u-X̃1Σg+ electronic transition of C3 has been recorded by laser-induced fluorescence at high resolution and rotationally analyzed. Based on the agreement of the lower state constants with infra-red data given by Kawaguchi et al. [9], the vibrational assignment is found to be 0 1 1(Δu)-0 1 1 (Πg). Seventeen of the 19 vibronic levels of the Ã1Πu state expected to lie below 25 700 cm-1 (a vibrational energy of 1025 cm -1) have now been identified.

Original languageEnglish
Pages (from-to)169-171
Number of pages3
JournalJournal of molecular spectroscopy
Issue number1-2
StatePublished - May 2011


  • Comet system
  • Electronic spectrum
  • New vibrational band
  • Triatomic carbon


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