Analysis of highly excited ‘hot’ bands in the SO2 molecule: ν2 + 3ν3 − ν2 and 2ν1 + ν2 + ν3 − ν2
Analysis of highly excited ‘hot’ bands in the SO2 molecule: ν2 + 3ν3 − ν2 and 2ν1 + ν2 + ν3 − ν2
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SO2 分子中高激发“热”带的分析：ν2 + 3ν3 − ν2 和 2ν1 + ν2 + ν3 − ν2
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发表时间：
2010
期刊：
影响因子：
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通讯作者：
C. Leroy
中科院分区：
文献类型：
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作者：
O. Ulenikov;E. Bekhtereva;O. Gromova;S. Alanko;V. Horneman;C. Leroy
我们建立了一个跃迁指定的变分方法，并将其应用于分析SO2分子的非常弱的“热”带：ν2 + 3ν3-ν2和2ν1 + ν2 + ν3-ν2。作为研究的第一步，重新分析“冷”带3ν3和2ν1 + ν3，并将属于这些带的跃迁分配到量子数J max的值。= 60，且J max. = 69，分别对应于3ν3和2ν1 + ν3带。在“清洗”属于3ν3和2ν1 + ν3带的跃迁的实验光谱之后，使用变分方法，使我们能够用量子数J max的值指定230和115个跃迁。= 35，且J max. = 26，分别对于带ν2 + 3ν3 − ν2和2ν1 + ν2 + ν3 − ν2。通过拟合指定的实验跃迁获得的光谱参数集再现了初始实验数据，其精度接近实验不确定性。
We set up a variational procedure of assignments of transitions and we applied it to the analysis very weak ‘hot’ bands, ν2 + 3ν3 − ν2 and 2ν1 + ν2 + ν3 − ν2, of the SO2 molecule. As the first step of the study, the ‘cold’ bands, 3ν3 and 2ν1 + ν3, are re-analysed and transitions belonging to those bands are assigned up to the values of quantum numbers J max. = 60, , and J max. = 69, for the bands 3ν3 and 2ν1 + ν3, respectively. After ‘cleaning’ the experimental spectrum from transitions belonging to the 3ν3 and 2ν1 + ν3 bands, a variational procedure was used that allowed us to assign 230 and 115 transitions with the values of quantum numbers J max. = 35, , and J max. = 26, for the bands ν2 + 3ν3 − ν2 and 2ν1 + ν2 + ν3 − ν2, respectively. The sets of spectroscopic parameters obtained by fitting the assigned experimental transitions reproduce the initial experimental data with an accuracy close to experimental uncertainties.