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Journal of Experimental and Theoretical Physics

, Volume 86, Issue 2, pp 289–298 | Cite as

Selective reflection of resonance radiation from excited media

  • B. A. Veklenko
  • R. B. Gusarov
  • Yu. B. Sherkunov
Atoms, Spectra, Radiation

Abstract

According to quantum electrodynamics, the cross section for resonant scattering of radiation on an aggregate of excited atoms can be written as a sum of positive definite terms. This type of structure is not consistent with the Fresnel formulas for the reflection coefficient of radiation from thermally excited media. The difference shows up on a macroscopic level and indicates that semiclassical radiation theory cannot be used. A study of the correlation between elastic scattering and stimulated emission processes clarifies the reason for the discrepancies. The resulting singularities require summing of Feynman diagrams which appear beginning in the sixth order of perturbation theory. A lower bound estimate for the reflection coefficient from a plane layer is given, including processes which violate the statistics of radiation. The contribution of stimulated emission processes caused by the initially scattered photon are examined specifically. An experiment is proposed which would settle the choice of theories.

Keywords

Reflection Coefficient Elastic Scattering Feynman Diagram Summing Quantum Electrodynamic 
These keywords were added by machine and not by the authors. This process is experimental and the keywords may be updated as the learning algorithm improves.

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Copyright information

© American Institute of Physics 1998

Authors and Affiliations

  • B. A. Veklenko
    • 1
  • R. B. Gusarov
    • 1
  • Yu. B. Sherkunov
    • 1
  1. 1.Moscow Power Engineering InstituteMoscowRussia

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