Precise frequencies for the 1 11 -2 02 transition of 33 SO 2 and SO 17 O in natural isotopic abundance have been obtained near 12 GHz by microwave Fourier transform spectroscopy in order to yield improved hyperfine constants. Nuclear spin-rotation coupling constants have been determined experimental
Origin of the variation with vibrational and rotational state of the fine-structure constants in O2, SO and S2
β Scribed by F.D. Wayne
- Publisher
- Elsevier Science
- Year
- 1975
- Tongue
- English
- Weight
- 534 KB
- Volume
- 31
- Category
- Article
- ISSN
- 0009-2614
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β¦ Synopsis
Calculations of the spin-orbit put Aso of the fine-smcture parameter h have been performed at several internuclear distances for the molecules 02, SO end S2 in their ground (X3 C-) states. Only the interaction with the lowest r E+ state was considerad and two-centrc integrals were neglected. A,, is found to m&e the dominant contribution to k. TIC vniation of the matrix elements in ?,so with internuclear distance has been derived and when combined with espressions for the variation of the energy denominator in As, enables the coefficients for the vibrational and rotational dependence of A to be estimated. Excellent ayeement with experiment is found.
π SIMILAR VOLUMES
We have used fast neutral beam laser spectroscopy to investigate transitions in the near-infrared, from the metastable \(a^{3} \Sigma_{u}^{+}\)state to predissociating levels of the electronic state \(c^{3} \Sigma_{g}^{+}\)of \(\mathrm{He}_{2}\). A number of transitions were not readily identified,
The torsional potentials of \(\mathrm{H}_{2} \mathrm{O}_{2}\) and \(\mathrm{H}_{2} \mathrm{~S}_{2}\) were reanalyzed using the published data for the torsional energy levels. The variations of the effective rotational constants \(A, B\), and \(C\) of these two molecules upon torsional excitation hav
The bimolecular reactions in the title were measured behind shock waves by monitoring the 0-atom production in COS-02-Ar and CS2-02-Ar mixtures over the temperature range between 1400 and 2200 K. A value of the rate constant for S + O2 -+ SO f 0 was evaluated to be (3.8 2 0.7) x 10" cm3 mol-' s-' be