Performance of a New Photoelectric Detection Method for Optical Spectroscopy. II. Application to Laser Raman Spectroscopy

Abstract

The application of a new ac photoelectric detection method to laser Raman spectroscopy is described. Chlorine isotope fine structure in HCCl₃, CCl₄, SiCl₄, GeCl₄, and SnCl₄ is well resolved and the relative intensities of the individual isotope lines revealed an unusual liquid‐state interaction in SiCl₄. Such interactions are absent at room temperature in the other molecules of this type. Spectra of CS₂, ν₁ and ν₂, and the ν₂ line of ¹²C₆H₆ and ¹²C₅¹³CH₆ are also presented. A survey scan of the Raman spectrum of the SnCl₄ using narrow slit openings demonstrates some of the advantages of the present detection method.