Fourier Transform Emission Spectroscopy of Triplet 13C3

✍ Scribed by S. Civis; D.W. Tokaryk

• Publisher: Elsevier Science
• Year: 1995
• Tongue: English
• Weight: 483 KB
• Volume: 172
• Category: Article
• ISSN: 0022-2852
• DOI: 10.1006/jmsp.1995.1200

✦ Synopsis

We describe the construction of a liquid-nitrogen-cooled multireflection emission cell. A combination of very small gas input apertures and very rapid evacuation through a combination of mechanical and booster pumps provides for a rapid replenishment of discharge-formed material in the cell. This cell is an excellent source for the study of the (C_{3}) radical in the triplet manifold of electronic states. Emission bands of triplet (C_{3}) were observed in the region around (6500 \mathrm{~cm}^{-1}) with a Fourier transform spectrometer. The strongest feature corresponds to the ((000)-(000)) band of the (\hat{b}^{3} \Pi_{g} \rightarrow \hat{a}^{3} \Pi_{4}) electronic transition, which for ({ }^{12} C_{3}) was observed and analyzed by Sasada et al. (J. Chem. Phys. 94, 2401-2407, 1991). We have observed this band for ({ }^{13} \mathrm{C}_{3}), and report the line positions and analysis in this paper. @ 1995 Academic Press. Inc.