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Positronium: Theory Versus Experiment

  • Richard Ley
  • Günter Werth
Chapter
Part of the Lecture Notes in Physics book series (LNP, volume 570)

Abstract

We have collected all known theoretical contributions to the energy levels of positronium and present a complete listing for the states n = 1, 2 and 3. We give the explicit dependence of the energy levels on the quantum numbers n, L, S and J up to the order R∞α3. In the next higher order R∞α4 only the contributions to S- and P-states are completely known. The annihilation rates of para- and ortho-positronium are completely listed up to the orders R∞α5 and R∞α6, respectively. We compare calculated values of energy levels and annihilation rates with experimentally observed quantities.

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Copyright information

© Springer-Verlag Berlin Heidelberg 2001

Authors and Affiliations

  • Richard Ley
    • 1
  • Günter Werth
    • 1
  1. 1.Institut für PhysikJohannes Gutenberg— UniversitätMainzGermany

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