Millimeter-Wave Molecular-Beam Spectroscopy: Alkali Fluorides

摘要: Rotational transitions of the alkali metal fluorides CsF, ${\mathrm{Rb}}^{87}$F, ${\mathrm{Rb}}^{85}$F, ${\mathrm{K}}^{39}$F, NaF, and ${\mathrm{Li}}^{7}$F have been measured in millimeter- submillimeter-wave regions where no previous measurements existed. The work was accomplished with a high-resolution molecular-beam absorption spectrometer, previously utilized for study other halides. A more reliable oven constructed used to vaporize at temperatures up 1100\ifmmode^\circ\else\textdegree\fi{}C. Measurements on rotational as high $J=27\ensuremath{\rightarrow}28$ first three vibrational states gave ${Y}_{01}$, ${Y}_{11}$, ${Y}_{21}$ accurately, most part, than they were known, ${Y}_{02}$ ${Y}_{12}$ time. From these Dunham constants derived potential coefficients, moments inertia, internuclear distances, constants.