Abstract
We sketch two-colour three-photon bound–bound transitions in hydrogen atoms embedded in weakly coupled plasmas. In the present context, analytical wavefunctions are used for initial and final states along with the pseudostate summation technique for intermediate states. The analytical wavefunctions are obtained from the modified wavefunctions for the screening Coulomb potential (Debye model) using the Ritz variation method. The resonance enhancement frequencies are varied with the Debye length. The results reveal plasma effects on the three-photon bound–bound transition amplitudes for the plasma-imbedded hydrogen atom.
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