Molecular Rydberg transitions. XVI. MCD of CH3Br
- 1 January 1980
- journal article
- research article
- Published by AIP Publishing in The Journal of Chemical Physics
- Vol. 72 (1) , 421-424
- https://doi.org/10.1063/1.438866
Abstract
Magnetic circular dichroism, first derivative (of absorption), and absorption spectra of methyl bromide are presented for the first s–Rydberg transition region, 55 000–61 000 cm−1. A straightforward analysis in terms of the ratios (MCD/derivative) of the signal amplitudes yields a unique identification of the first s–Rydberg states, 3E(1) and 1E(1). These identifications, in conjunction with oscillator strength ratios and an intermediate coupling model, lead to an assignment of the remaining first s–Rydberg states 3E(2) and 3E(0±). All of these assignments are corroborative of ones based on vibrational analyses and extrapolations [S. Felps, P. Hochmann, P. Brint, and S. P. McGlynn, J. Mol. Spectrosc. 59, 355 (1976)]. The power of MCD techniques in VUV Rydberg analyses is strikingly demonstrated.Keywords
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