MEASUREMENT OF THE INFRARED-ACTIVE STRETCHING FUNDAMENTAL $(\nu_{3})$ OF $DF_{6}$
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Date
1985
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Publisher
Ohio State University
Abstract
High-resolution (Doppler-limited) spectra of the infrared-active stretching fundamental $\nu_{3}$ of $^{234} UF_{6}$ have been obtained between 620.6 and $633.5 cm^{-1}$ using tunable semiconductor diode lasers. Interference from hot bands was suppressed by cooling the $UF_{6}$ in a supersonic expansion, and useful monomer concentrations were produced with effective temperatures of $<100$ K. Portions of the band from P (77) to R(66) will be shown. All transitions from the vibrational ground state have been assigned; the $\nu_{3}$ Q branches of both $^{238} UF_{6}$ and $^{238} UF_{6}$ have been analyzed, and the isotope shift accurately measured. The isotope shift and the Coriolis constant $\zeta$ have been used to refine the general quadratic force field of $UF_{6}$. The Cartesian displacement coordinates of both infrared-active fundamentals will be illustrated and compared with those of $SF_{6}$.
Description
Author Institution: Los Alamos National Laboratory, University of California; Los Alamos National Laboratory, University of California; Los Alamos National Laboratory, University of California; Los Alamos National Laboratory, University of California; Los Alamos National Laboratory, University of California; Los Alamos National Laboratory, University of California; Union Carbide Corporation, Oak Ridge Gaseous Diffusion Plant; Los Alamos National Laboratory, University of California; Department of Chemistry, University of Florida; Union Carbide Corporation, Oak Ridge Gaseous Diffusion Plant; Union Carbide Corporation, Oak Ridge Gaseous Diffusion Plant