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Communication Dans Un Congrès Année : 2011

Analysis of high excited "hot" bands of the SO2 molecule

Résumé

The main goal of the present study is to analyse rotational structures of highly excited "hot" vibrational bands, v1+2v2-v2 and 2v2+v3-v2, v2+3v3-v2 and 2v1+v2+v3-v2, and v2+2v3-v2. All of these bands are located in the region of considerably stronger bands, v1 + v2 and v2 + v3, 3v3 and 2v1+v3, and 2v3, respectively . On that reason, as the first step of analysis, we made assignments of transitions belonging to these strong bands. As the result of analysis, we were able to assign three times more transitions to the bands v1 + v2 , v2 + v3, and 3v3 (3360 transitions with Jmax. = 78 and Kmax.a = 27 to the band v1 + v2, and 2380 transitions with Jmax. = 69 and Kmax.a = 24 to the band v2 + v3, and about 2200 transitions with Jmax. = 60 and Kmax.a = 19 to the band 3v3) and four times more transitions to the 2v1+v3 and 2v3bands (about 2300 transitions with Jmax. = 69 and Kmax.a = 20 to the band 2v1+v3 and more than 4500 transitions with Jmax. = 76 and Kmax.a = 26 to the band 2v3) than it was known in the before literature. After "cleaning" the experimental spectrum from transitions belonging to the strong bands, assignment of transitions of "hot" bands was made on the basis of calculation scheme derived in Ref. [1]. As the result, 1230 transitions with Jmax. = 60 and Kmax.a = 20 were assigned to the band v1+2v2-v2, and 990 transitions with Jmax. = 59 and Kmax.a = 16 were assigned to the band 2v2+v3-v2, and 230 transitions with Jmax. = 35 and Kmax.a = 10 to the band v2+3v3-v2, and 115 transitions with Jmax. = 26 and Kmax.a = 11 to the band 2v1+v2+v3-v2, and 885 transitions with Jmax. = 32 and Kmax.a = 17 to the band v2+2v3-v2. The set of spectroscopic parameters, determined from the fit of all the obtained energy levels, reproduces experimental line positions with the accuracy close to experimental uncertainties. Obtained results can be used in different both pure scientific, and applied problems of physics, chemistry, astrophysics, etc. [1]. O. N. Ulenikov, E. S. Bekhtereva, O. V. Gromova, S. Alanko, V.-M. Horneman, and C. Leroy, Molec. Phys., 108, 1253, (2010).
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Dates et versions

hal-00637919 , version 1 (03-11-2011)

Identifiants

  • HAL Id : hal-00637919 , version 1

Citer

O.V. Gromova, O.N. Ulenikov, E.S. Bekhtereva, Claude Leroy, V.-M. Horneman. Analysis of high excited "hot" bands of the SO2 molecule. LASER PHYSICS 2011, Oct 2011, Ashtarak, Armenia. ⟨hal-00637919⟩
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