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ANALYSIS OF THE $v_{3}$ VIBRATION-TORSION-ROTATION BAND OF $H_{2}O_{2}$.
J. W. C. Johns, J. M. Flaud, Claude Camy-Peyret
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Abstract
The spectrum of $H_{2}O_{2}$ has been recorded in the region from 750 to $1000 cm^{-1}$ at a resolution of about $0.003 cm^{-1}$. The two lowest torsional levels associated with $\\nu_{3}$, the o-o stretch, have been located near $870 cm^{-1}$ These bands occur amongst hot bands associated with $\\nu_{6}$ (centered near $1600 cm^{-1}$) and bands involving highly excited torsion-rotation levels and are therefore not easily recognized. Nevertheless sub-bands with $K_{a}^{\\prime}-K_{a}^{\\prime\\prime} = 6-5, 5-4, 4-3, 3-2, 2-1, 1-0, 0-1, 1-2, 2-3, 3-4$ and 4--5 have been located for the two lowest (301 and 303) torsional levels of $\\nu_{3}$. The splitting between these two levels is about $12 cm^{-1}$ which is close to that observed in the ground state. The analysis, which involves interactions with ground state torsion-rotation levels, will be discussed.