Abstract
Various schemes are compared for measuring depolarization factors in Raman spectra with laser excitation. Optical systems are discussed for producing a laser beam free of unwanted emission lines and for focusing scattered light on the slit and on the detector. The rotational spectrum of gaseous F<sub>2</sub> has been used to determine a rotational constant of <i>B</i><sub>0</sub>=0.8841±0.0006 cm<sup>−1</sup>, corresponding to <i>r</i><sub>0</sub>=1.4168±0.0005 Å.
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