Infrared high-resolution spectra of ozone in the range 5500-5570cm-1:: analysis of ν2+5ν3 and ν1+ν2+4ν3 bands

被引:17
作者
Barbe, A
Chichery, A
Tyuterev, VG
Taskhun, SA
Mikhailenko, SN
机构
[1] Univ Reims, GSMA, UFR Sci,CNRS UPRESA Q 6089, Grp Spectrometrie Mol & Atmospher,Equipe Associee, F-51687 Reims 2, France
[2] LTS, Inst Atmospher Phys, RAN, Tomsk 634055, Russia
关键词
D O I
10.1088/0953-4075/31/11/017
中图分类号
O43 [光学];
学科分类号
070207 ; 0803 ;
摘要
The nu 2 + 5 nu(3) and nu(1) + nu(2) + 4 nu(3) bands of ozone, which occur in the 5500 cm(-1) region, have been observed for the first time using a Fourier transform spectrometer, operating at 0.008 cm(-1) resolution and with a large pathlength x pressure product (3216 cm x 28.3 Torr). The assignment of rotation-vibration transitions has been done for J up to 35 and Ka up to 12, for the nu(2) + 5 nu(3) band and up to J = 40 and Ka = 2 for the nu(1) + v(2) + 4 nu(3) band respectively. The effective Hamiltonian used in calculations accounts for the first-order Coriolis coupling between these two bands. In addition, as the levels corresponding to Ka = 5 are perturbed, it was necessary to account for anharmonic resonance with the (321) state. Also, to correctly reproduce the levels of (015) with Ka = 8, 9, 10 it has been necessary to include a Coriolis coupling with (080) state in the model. In this way, we have obtained a very satisfactory r.m.s. deviation of 2.4 x 10(-3) cm(-1), near the experimental accuracy. Rovibrational line intensities of nu(2) + 5 nu(3) and nu(1) + nu(2) + 4 nu(3) bands were measured and the value of the principal transition moment constants have been recovered. Finally a complete list of line positions and intensities was calculated leading to the integrated band intensity of S-nu = 9.33 x 10(-23) cm(-1)/molecule cm(-2) for the nu(2) + 5 nu(3) band and S-nu = 1.44 x 10(-23) cm(-1)/molecule cm(-2) for the nu(1) + nu(2) + 4 nu(3) band at 296K with a cut-off of 3 x 10(-26).
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页码:2559 / 2569
页数:11
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