Article ID | Journal | Published Year | Pages | File Type |
---|---|---|---|---|
5428257 | Journal of Quantitative Spectroscopy and Radiative Transfer | 2014 | 16 Pages |
â¢The first high resolution analysis of the weak hot bands, v10+v12-v10 and v7+v10-v10.â¢Resonance interactions in the C2H4 molecule.â¢Determination of spectroscopic parameters of the (v10=v12=1) and (v7=v10=1) states.
Two weak “hot” absorption bands, ν7+ν10âν10 and ν10+ν12âν10, of ethylene, C2H4, were analyzed for the first time with high resolution using the Fourier transform interferometer Bruker IFS-120 HR. As the result of analysis we assigned about 930 and 370 transitions (404 and 185 upper state ro-vibrational energy values) with Jmax.=27, Kamax.=14 and Jmax.=20, Kamax.=9 for the bands ν7+ν10âν10 and ν10+ν12âν10, respectively. Strong local resonance interactions of the vibrational state (v10=v12=1) with the five other states, and of the state (v7=v10=1) with the seven other states were taken into account, and a set of 77 varied parameters, which reproduce the initial experimental data with the rms deviation of 6.1Ã10â4 cmâ1 which is close to experimental uncertainties, was obtained.