dc.creator Costain, C. C. en_US dc.date.accessioned 2006-06-15T12:44:26Z dc.date.available 2006-06-15T12:44:26Z dc.date.issued 1955 en_US dc.identifier 1955-C-6 en_US dc.identifier.uri http://hdl.handle.net/1811/7352 dc.description Author Institution: Division of Physics, National Research Council en_US dc.description.abstract The $J = 1 \rightarrow 0$ rotation transitions of $CF_{3}H$ and $CF_{3}D$ in their vibrationally excited states have been measured with a microwave spectrometer using a heated absorption cell. The absorption cell consists of a plane-parallel waveguide, 20 feet in length, which can be heated to $600^\circ C$. The detection sensitivity of the spectrometer is about $10^{-9}$/cm. The observed lines have been assigned to their correct vibration levels by comparing their relative intensities at various temperatures with the relative intensities calculated from the Boltzman factor of the known vibrational frequencies. For $CF_{3}H, J = 1 \rightarrow 0$ transitions have been observed for the excited $\nu_2$, $\nu_3$, $\nu_4$, $\nu_5$, $\nu_6$, $2\nu_6$, $3\nu_6$ and $\nu_3+\nu_6$ vibrational states. For $CF_{3}D$, transitions have been observed in the $\nu_2$, $\nu _3$, $\nu_6$, $2\nu_6$ and $3\nu_6$ states, but the identification of the lines for the $\mu_4$ and $\mu_5$ states is not yet certain. From these measurements together with others to be carried out in the near future on the $J = 2 \rightarrow 1$ line and from the infrared determination of $\alpha_{1}$, it will be possible to obtain accurate values of $B_{e}$ for both $CF_{3}H$ and $CF_{3}D$. An anomalous Stark effect has been observed in the $J = 1 \rightarrow 0$ lines of both the $\nu_4$ and $\nu_5$ states of $CF_3H$. This effect is being investigated further. en_US dc.format.extent 109437 bytes dc.format.mimetype image/jpeg dc.language.iso en en_US dc.publisher Ohio State University en_US dc.title THE MICROWAVE SPECTRUM OF FLUOROFORM IN EXCITED VIBRATIONAL STATES en_US dc.type article en_US
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