The Millimeter-Wave Spectrum and Rest Frequencies of FeF (X 6 Delta i)

Details The Millimeter-Wave Spectrum and Rest Frequencies of FeF (X 6 Delta i) The Millimeter-Wave Spectrum and Rest Frequencies of FeF (X 6 Delta i)

Oct 1996

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1996apj...470.1237a&link_type=abstract

Astrophysical Journal v.470, p.1237

Astronomy and Astrophysics

Astronomy

10

Ism: Molecules, Line: Identification, Molecular Data, Methods: Laboratory

Scientific paper

The pure rotational spectrum of the FeF radical (X6Δi ) has been measured in the laboratory using millimeter/submillimeter direct absorption techniques. FeF was created by the reaction of iron vapor, produced in a high-temperature Broida-type oven, and F2. Eleven rotational transitions in the frequency range 121-374 GHz were recorded in all six spin-orbit components. Lambda-type doubling was resolved in the Ω = 3/2, 1/2, and -1/2 sublevels, and hyperfine structure, arising from the fluorine nuclear spin, was observed in all spin-orbit ladders. The data were successfully analyzed using a 6Δ Hamiltonian and rotational, spin-orbit, spin-spin, lambda-doubling, and hyperfine parameters were determined. The observation of AlF in the circumstellar shell of IRC +10216 suggests that other fluoride molecules such as FeF may be present in this object.

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