Choice of Gauge in Two-Photon Transitions:Transition in Atomic Hydrogen
- 24 October 1977
- journal article
- research article
- Published by American Physical Society (APS) in Physical Review Letters
- Vol. 39 (17) , 1070-1073
- https://doi.org/10.1103/physrevlett.39.1070
Abstract
The two-photon transition rate for hydrogen is evaluated with the and the interactions including the continuum. We find that the interaction approaches the final result with a small number of intermediate states and consequently is the one to be used in any approximate calculation. Numerical values of the two-photon absorption coefficient as a function of frequency are given and the resonance enhancement is exhibited.
Keywords
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