The absolute intensities of the binary combination bands in the infrared spectrum of SF6 |
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| Affiliation: | 1. Institute of Applied Physics of the Russian Academy of Sciences, 46 Ulyanov str., Nizhny Novgorod 603950, Russia;2. V.E. Zuev Institute of Atmospheric Optics, Siberian Branch of the Russian Academy of Sciences, 1 Academician Zuev square, Tomsk 634055, Russia;3. Saint Petersburg State University, Universitetskaya emb., 7/9, Saint Petersburg 199034, Russia;4. Department of Chemistry, Lomonosov Moscow State University, GSP-1, Vorobievy Gory, Moscow 119991, Russia;5. A.M. Obukhov Institute of Atmospheric Physics, Russian Academy of Sciences, 3 Pyzhevsky per., Moscow 119017, Russia;6. Institute of Quantum Physics, Irkutsk National Research Technical University, 83 Lermontov str., Irkutsk 664074, Russia;7. Center for Astrophysics | Harvard & Smithsonian, Atomic and Molecular Physics Division, 60 Garden Street, Cambridge, MA 02138, USA |
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| Abstract: | The intensities of all the fundamentals and binary combination bands in the infrared spectrum of SF6 have been measured. Estimates of the cubic normal-coordinate force constants previously determined from an anharmonic Urey—Bradley force field have been used to compute the contributions to the combination intensities from the first derivatives of the dipole moment. These, in turn, have been used to obtain experimental values of the second derivatives of the molecular electric dipole moment with respect to the normal coordinates. |
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