Journal of Radioanalytical and Nuclear Chemistry

, Volume 211, Issue 1, pp 145–152 | Cite as

Measurement of the o-Ps decay rate using an energy and time spectrometer

  • C. Nikolopoulos
  • Sp. Dedoussis
  • M. Chardalas
  • C. A. Eleftheriadis
Contributed Papers


A spectrometer for direct positronium annihilation measurements (lifetime as well as energy distribution of annihilation photons) has been built, based on an existing energy spectrometer1 presented by our group. A time branch has been added which allowed us to measure the o-Ps lifetime. We found the decay rate to be 7.0458±0.0279 μs−1.


Physical Chemistry Inorganic Chemistry Decay Rate Energy Distribution Positronium Annihilation 
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Copyright information

© Akadémiai Kiadó 1996

Authors and Affiliations

  • C. Nikolopoulos
    • 1
  • Sp. Dedoussis
    • 1
  • M. Chardalas
    • 1
  • C. A. Eleftheriadis
    • 1
  1. 1.Nuclear Physics DepartmentAristotle University of ThessalonikiThessaloniki(Greece)

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