Calculation of absorption coefficient for the ν1 band of sulfur dioxide |
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Authors: | M Osumi T Kunitomo |
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Institution: | Department of Mechanical Engineering, Faculty of Engineering, Kyoto University, Kyoto, Japan |
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Abstract: | The absorption coefficients S/d of sulfur dioxide have been calculated for the ν1 band for temperatures from 300 ~ 1500°K, taking the major isotopic species S34O2 into consideration. The total number of the vibrational transitions considered were 4, 10, 23, 41 and 70 for the temperatures of 300, 600, 900, 1200 and 1500°K, respectively. The vibrational energy was calculated to the second order, and the rotational energy and matrix element were calculated exactly with consideration for the asymmetry of the sulfur dioxide molecule. The line intensities greater than 1·0 × 10-8 cm-2 atm-1 STP were included in the calculations. The wavenumber regions of 1000 ~ 1300 cm-1 were divided into small intervals of Δω = 10 cm-1 and the S/d averaged over the Δω were obtained. The S/d and some of the line intensities and positions at 300°K were compared with the experimental results of other workers and good agreement was obtained. |
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