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The European Physical Journal D

Rare-gas-induced broadening and shift of two-photon transitions to intermediate $\mathsf{(n=9{-}14)}$ Rydberg states of atomic thallium *

G. Hermann, B. Kaulakys, G. Mahr

Published Feb 1, 1998• 5 citations
Publisher
DOI
10.1007/s100530050073

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Journal of Physics B Atomic Molecular and Optical Physics•Jan 10, 2002•7 citations
Rare-gas-induced broadening and shift of two-photon transitions to intermediate (n=9−14)\mathsf{(n=9{-}14)}(n=9−14) Rydberg states of atomic thallium *
In this paper we present the results and discuss the applicability of an impact theory of lineshapes, developed by Henry and Herman for the pressure-induced broadening and shifting of transitions from the ground state to various Rydberg states of alkalis, to the situation in which the perturbing atoms are ground-state rare gas atoms. This theory, which has successfully described the collisional broadening of Rydberg states by alkali atoms, can without major alterations predict the widths and shifts of Doppler-free two-photon transitions to n S and n D states of Rb and Na, 6⩽ n ⩽30, perturbed by He, Ne, Ar, Kr and Xe. The results in all cases show reasonable agreement with experiment, with the transitions to Na**( n D) states being somewhat less satisfactory than the others.