# LINE ASSIGNMENTS AND INTENSITES OF THE $\nu_{2}+\nu_{3}-\nu_{2}$ HOT BAND OF $CH_{4}$ at $3010 cm^{-1}$

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 Title: LINE ASSIGNMENTS AND INTENSITES OF THE $\nu_{2}+\nu_{3}-\nu_{2}$ HOT BAND OF $CH_{4}$ at $3010 cm^{-1}$ Creators: Brown, L. R.; Toth, R. A.; Hunt, R. H. Issue Date: 1980 Publisher: Ohio State University Abstract: As part of a comprehensive effort to compile line parameters of methane from 2400--3200 $cm^{-1}$, the P and R branches of the $\nu_{2}+\nu_{3}-\nu_{2}$ band of $CH_{4}$ at $3010 cm^{-1}$ have been assigned. This process utilized the analysis of $\nu_{2}+\nu_{3}$ at $4544 cm^{-1}$ by Hilico et. al. and the $\nu_{2}$ levels derived from the infrared spectrum by Margolis to predict the positions of the hot band. Experimentally determined lower state energies have been used to confirm assignments, and room temperature line intensities are observed on the order of $10^{-3}$ $cm^{-2}$ $atm^{-1}$ or less. At each J, the strongest hot band P branch lines occur at the highest energy levels of $\nu_{2} + \nu_{3}$, While the strongest R branch lines occur at the lowest levels. These data indicate a selection rule of $\Delta_{E} = 0$ hand also $\Delta N_{E} = 0$ for this hot band. Description: Author Institution: URI: http://hdl.handle.net/1811/11153 Other Identifiers: 1980-FB-8