Journal of Physics B Atomic Molecular and Optical Physics

Collisional shifts and broadenings of doubly excited states of barium

M. Marafi, Z Suji, K. S. Bhatia, Joseph Mathew

Published Oct 1, 2008• 7 citations

Abstract

Shift and broadening parameters for doubly excited states of 5d6d, 5d7d, 5d7s, 5d8s and 6p 2 configurations in neutral barium atoms are presented. A tunable dye laser pumped by an excimer laser was used to populate the Rydberg states of Ba by two-photon absorption from the 6s 2 1 S 0 ground state. Inert gases Ar, Kr and Xe at 100 mbar pressure were used as perturbing gases. The resulting line shapes were fitted to a Voigt line shape function, from which shift and broadening parameters were inferred.

DOI: 10.1088/0953-4075/41/20/205203

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