Raman Apparatus Using Laser Excitation and Polarization Measurements. Rotational Spectrum of Fluorine

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 F₂ has been used to determine a rotational constant of B_o=0.8841 ±0.0006 cm⁻¹, corresponding to r₀=1.4168±0.0005 Å.