Laser stark spectroscopy of the ν4 + ν8 − ν8 band of CH3C15N: Fermi resonances with 4ν84, 4ν82, and (ν7 + ν8)2 |
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| Authors: | Akihiro Mito Jun Sakai Mikio Katayama |
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| Institution: | Department of Pure and Applied Sciences, College of General Education, University of Tokyo, Komaba, Meguro-ku, Tokyo 153, Japan |
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| Abstract: | Laser Stark spectra for the ν4 + ν8 ? ν8 parallel band of CH3C15N were measured by using CO2 and N2O lasers in the 10-μm region. About 300 resonances have been assigned to 102 rovibrational transitions with J′ <- 16 and ?9 ≤ kl ≤ +9. Anomalies observed around kl = ?6 and +8 were proved to be due to the Fermi interactions with 4ν82 and 4ν84, respectively. Another Fermi interaction with (ν7 + ν8)2 was necessary to account for the anomaly around kl = ?6. Observed data were analyzed by the method of least squares, and precise molecular constants have been obtained. |
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