Simultaneous analysis of the ν2and ν4bands of methane
- 1 December 1976
- journal article
- research article
- Published by Taylor & Francis in Molecular Physics
- Vol. 32 (6), 1609-1625
- https://doi.org/10.1080/00268977600102941
Abstract
Vibration-rotation spectra of the ν2 and ν4 bands of CH4 have been analysed by a simultaneous diagonalization of the hamiltonian matrices for the v 2=1 and v 4=1 states coupled by the Bξ2,4 Coriolis interaction term. The effective hamiltonians used extend to sextic centrifugal distortion terms. The results are a significant improvement on any previous analysis; 438 assigned transitions up to J′=16 have been fitted with an overall standard deviation of 0·016 cm-1. The method used is compared with an alternative theoretical approach given by Berger.Keywords
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