Predissociation linewidths for the Schumann-Runge bands of 16O18O |
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Institution: | 1. Comprehensive Epilepsy Center, Seirei Hamamatsu General Hospital, Shizuoka, Japan;2. Department of Neurosurgery, Seirei Hamamatsu General Hospital, Shizuoka, Japan;3. Department of Pathology, Seirei Hamamatsu General Hospital, Shizuoka, Japan;4. Department of Neurosurgery, University of Tsukuba, Ibaraki, Japan |
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Abstract: | We have measured predissociation linewidths for rotational lines from the (2-0)–(15-0) Schumann-Runge bands of 16O18O. The behaviour of the vibrational widths is intermidiate between those observed previously for 16O2 and 18O2, with predissociation maxima at ν' = 4, 7, 10, (15). Our experimental linewidths are found to exhibit systematic variation with rotation for some of the bands studied. A model of the predissociation, including the interactions of the B3Σ-u state with repulsive 5Πu, 3Π u, 1Πu and 3Σ+u states, and with molecular interaction parameters determined by a least-squares fit to previous 16O2 linewidths, is found to predict accurately the observed vibrational and rotational dependences of linewidths for 16O18O. |
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