6533b86cfe1ef96bd12c801e
RESEARCH PRODUCT
Linestrengths of the ν2 and ν4 bands of 12CH4 and 13CH4
Linda R. BrownJ.c. HilicoMichel Loetesubject
PhysicsSolar observatoryAbsorption spectroscopyRemote sensing applicationInfraredFourier transform spectrometersSpectral bandsAtomic and Molecular Physics and OpticsComputational physicssymbols.namesakeNuclear magnetic resonanceFourier transformObservatorysymbolsPhysical and Theoretical ChemistrySpectroscopydescription
Absorption spectra recorded on the high-resolution Fourier transform spectrometer at Kitt Peak National Observatory/National Solar Observatory were used to measure individual line strengths of the nu(2) and nu(4) bands of (C-12)H4 and (C-13)H4. The measurements were used to obtain expressions that could be used to correctly predict individual line strengths through five orders of magnitude of absorption strength and high values of J-prime. Transition strengths were modeled using the dyad formalism of two interacting bands and a seven-term second-order dipole-moment expansion. The successful fitting of these data indicates that the method can be used to model measurements of 2- to 5-percent precision even at high values of J. For remote sensing applications, the present prediction of the dyad spectrum represents a substantial improvement.
| year | journal | country | edition | language |
|---|---|---|---|---|
| 1989-02-01 | Journal of Molecular Spectroscopy |