Collision effects in Rydberg states of xenon

Abstract
Using laser excitation and optogalvanic detection, the authors have studied the shifts and the broadenings of the optical lines connecting the 5p56p configuration of xenon to the states 5p5nd(7/2)4, 5p5ns(3/2)2 and 5p5ns(3/2)1. Their values and the way they depend on the principal quantum number have been interpreted using a theoretical calculation founded on the Fermi and Omont model.