Relative noble-gas-induced broadening of theDlines of atomic lithium

Abstract

Photon echoes have been employed to measure the relative broadening rates of the lithium $D$ lines perturbed by the noble gases. We find that, for each noble-gas perturber, the $D_1$-line and $D_2$-line photon-echo-relaxation rates are identical. Our results are compared with those obtained in line-shape studies of pressure broadening.