Raman-like scattering processes in metastable hydrogenic atoms

Abstract
Differential and total cross sections for various competing two-photon processes in metastable 2s hydrogenic atoms are given for several current laser frequencies. Exact calculations are performed within the framework of conventional time-dependent perturbation theory by using a Sturmian representation of the Coulomb Green’s function. Our results are useful for discussing a recent proposal for obtaining intense vacuum uv light sources from anti-Stokes Raman scattering.