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New Analysis of 2ν1 + ν2, ν1 + ν2 + ν3, and ν2 + 2ν3 Bands of Ozone in the 2600–2900 cm−1 Region

✍ Scribed by S. Mikhailenko; A. Barbe; J.J. Plateaux; Vl.G. Tyuterev

Publisher
Elsevier Science
Year
1999
Tongue
English
Weight
198 KB
Volume
196
Category
Article
ISSN
0022-2852

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✦ Synopsis

The 2600 -2900 cm Ϫ1 spectral range is revisited for an accurate determination of line intensities of the 2 1 ϩ 2 , 1 ϩ 2 ϩ 3 , and 2 ϩ 2 3 bands of ozone. The fit on 1702 energy levels of ( 012), (111), and (210) states determined from observed transitions with J max Յ 61 and K a max Յ 17 gives a rms ϭ 5.6 ϫ 10 Ϫ4 cm Ϫ1 and provides a satisfactory agreement between calculated and observed line positions. Line intensities have been measured and fitted, leading to the determination of transition moment parameters for the three bands. Using these parameters, we have obtained the following estimations for the integrated band intensities S( 1 ϩ 2 ϩ 3 ) ϭ 2.509 ϫ 10 Ϫ20 , S( 2 ϩ 2 3 ) ϭ 0.330 ϫ 10 Ϫ20 , and S(2 1 ϩ 2 ) ϭ 0.0802 ϫ 10 Ϫ20 cm Ϫ1 /mol cm Ϫ2 at 296 K, with a cutoff of 10 Ϫ26 cm Ϫ1 /mol cm Ϫ2 . The value of the 1 ( 210)-( 000) parameter associated with the x operator for 2 1 ϩ 2 band obtained in our analysis appears to be eight times smaller than the previously determined value of this parameter [M.

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