The perpendicular band ν14 of benzene near 10 μm |
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Authors: | Josef Plíva JWC Johns |
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Institution: | Department of Physics, The Pennsylvania State University, University Park, Pennsylvania 16802 USA;Herzberg Institute of Astrophysics, National Research Council of Canada, Ottawa, Ontario K1A 0R6, Canada |
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Abstract: | The perpendicular band of the E1u vibration ν14 of C6H6, with band origin at 1038.2670 cm?1, was measured on a Bomem high-resolution Fourier transform spectrometer with a 246-cm optical path difference. The spectrum was deconvolved to an effective linewidth of ~0.002 cm?1. A total of 135 subbands have been assigned in the ν14 band. The band was found to be remarkably free of perturbations by other states. A Hamiltonian matrix of order 2, including merely the rotational l-type resonances between the ν14+(J, K) and ν14?(J, K ? 2) levels, was used for the treatment of the upper states of this band. A set of accurate spectroscopic constants was obtained, which reproduces a total of 3258 measured lines with an over-all standard deviation of 0.0006 cm?1. |
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