Experimental Study on the Wavelength Dependence of the Raman Scattering Cross Sections

Abstract

The Raman scattering cross sections of the 992‐cm⁻¹ line of C₆H₆, the 1002‐cm⁻¹ line of C₆H₅CH₃, the 1345‐cm⁻¹ line of C₆H₅NO₂, the 656‐cm⁻¹ line of CS₂, and the 459‐cm⁻¹ line of CCl₄ were measured with the laser excitation at 4880, 5145, and 6328 Å. The standard deviations were 3.1%–3.6%. The wavelength dependences of the results show exact agreements, except the 1345‐cm⁻¹ line of C₆H₅NO₂, with a simplified theory in which the resonant effect of only one resonant electronic level is taken into account.