UNIVERSITY OF BUCHAREST
FACULTY OF PHYSICS

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Conference: Bucharest University Faculty of Physics 2011 Meeting


Section: Theoretical Physics and Applied Mathematics


Title:
Rayleigh scattering and photoeffect on 2s electrons, including retardation and relativistic kinematics effects


Authors:
A. Costescu (1), S. Spanulescu (2), C. Stoica (1), K. Karim (1)


Affiliation:
(1) University of Bucharest, Faculty of Physics

(2) Hyperion University


E-mail


Keywords:


Abstract:
Using the Coulomb Green function method, the two photon S-matrix element is obtained in the case of Rayleigh scattering by 2s electrons, in the nonrelativistic limit. The corrections to the well known Stobbe formula for the photoeffect from the 2s electrons due to the retardation and relativistic kinematics are also obtained. A good agreement (within 10%) is found when comparing our results with the numerical full relativistic calculations for photon energies up to \alphaZm. Acknowledgments: For C. Stoica this work was supported by the strategic grant POSDRU/89/1.5/S/58852, Project ”Postdoctoral programme for training scientific researchers” co-financed by the European Social Found within the Sectorial Operational Program Human resources Development 2007-2013.