Electron-Photon Coincidences and Polarization of Impact Radiation

  • H. Kleinpoppen


Two basic aspects are associated with the title of this talk: first, the physics of electron atom collisions in general, and secondly, as a special problem the angular distribution of photons and also their correlation with the angular distribution of electrons having excited atoms and from which photons are emitted. The collision process between unidirectional and monoenergetic electrons and atomic targets still represents an important chapter in our knowledge of fundamental scattering processes. Due to the recent success of new types of experiments which are different in their methods to conventional cross section measurements, the state of investigation of electron atom collision physics has changed considerably. On the one hand the situation can be characterised by the same remark as in Professor Bederson’s1 review paper on “Electronic Polarization Behaviour in Collisions” at the Third International Atomic Physics Conference in Boulder, namely, the subject of my report is part of the full story about the physics of electron atom collisions. On the other hand, the recent more ambitious and new types of experiments including electron spin and photon polarization analysis, and also the electron photon correlation measurements bring us to a much deeper understanding of the details of the electron atom collision process.


Polarization Curve Excitation Function Born Approximation Excitation Cross Section Impact Radiation 
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Copyright information

© Plenum Press, New York 1975

Authors and Affiliations

  • H. Kleinpoppen
    • 1
  1. 1.Department of PhysicsUniversity of StirlingStirlingScotland

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