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Spectroscopy of the negative Positronium ion at the FRM2

  • Fundamental physics with positronium at the FRM 2


    Investigation of the most fundamental three-body system: the purely leptonic negative ion of positronium Ps-, consisting of a positron and two electrons. This system allows to study the binding three-body force via a measurement of the decay constant and (non-)resonant photoionization measurements. The latter will allow to generate the first energy-tunable pure ortho-positronium beam. more