Comment on two-photon emission of x rays
- 1 April 1974
- journal article
- research article
- Published by American Physical Society (APS) in Physical Review A
- Vol. 9 (4) , 1762-1764
- https://doi.org/10.1103/physreva.9.1762
Abstract
The structure of the second-order matrix element describing two-photon emission of x rays is discussed. The point of departure is the gauge invariance of a general Hamiltonian in the formulation by Sachs and Austern.Keywords
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