Determination of the collision-induced depolarized Raman light scattering cross section of the argon diatom

Publisher Website
Google Scholar
Abstract
We report two independent calibrations of the argon diatom Raman light scattering cross section at 20 cm−1 shift (Stokes side), based on rotational Raman lines of hydrogen and nitrogen as an external reference standard. The precision is about 5% on an absolute scale, and the agreement relative to each other even better. The excitation wavelength is 5145 Å, but calibrations at 4880 and 4579 Å are seen to be consistent if the dominating factor 1/λ4 (λ = wavelength) is accounted for. Thus, a useful secondary standard for the calibration of similar spectra is obtained, and a long-standing question as to the absolute value of the diatom scattering cross section appears to be settled.

This publication has 0 references indexed in Scilit: