Broadening and shift of the inter-combination spectral line of Cd 326.1 nm perturbed by Kr

Abstract

The line center of the Cd inter-combination spectral line at 326.1 nm (51S0–53P1) perturbed by Kr has been investigated using a high-resolution scanning Fabry–Perot interferometer. The van der Waals and Lennard–Jones potentials for a Cd–Kr system have been calculated using the Coulomb approximation. The values of the pressure broadening (β) and shift (δ) coefficients for the studied line at a temperature of 468 K, density of cadmium N=4.02×1012 cm−3 and Kr gas pressure ranging from 3 to 95 Torr have been obtained and compared with published theoretical and experimental values.