کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
5427399 | 1508628 | 2017 | 12 صفحه PDF | دانلود رایگان |
- The first high resolution analysis of the weak hot bands, ν10+ν12âν10 and ν7+ν10âν10.
- Resonance interactions in the C2D4 molecule.
- Determination of spectroscopic parameters of the (v10=v12=1) and (v7=v10=1) states.
The two strongest absorption “hot” bands of C2D4, ν7+ν10âν10 and ν10+ν12âν10 were analyzed for the first time on the basis of high resolution infrared spectra recorded with a Bruker high resolution Fourier transform spectrometer. About 740 and 550 transitions (233 and 174 upper state ro-vibrational energy values) with Jmax.=25, Kamax=18 and Jmax.=20, Kamax.=10 for the bands ν7+ν10âν10 and ν10+ν12âν10 were assigned. The obtained upper ro-vibrational energies were used then in the weighted fit of parameters of the effective Hamiltonian which takes into account resonance interactions between the vibrational states (v7=v10=1) and (v10=v12=1), on the one hand, and eight other closely located vibrational states, on the other hand. A set of 46 varied parameters was obtained from the fit, which reproduces the initial experimental data with the rms deviation of 2.5Ã10â4cmâ1 and which is close to experimental uncertainties.
Journal: Journal of Quantitative Spectroscopy and Radiative Transfer - Volume 187, January 2017, Pages 178-189