JJAP Conference Proceedings

JJAP Conf. Proc. 2, 011303 (2014) doi:10.7567/JJAPCP.2.011303

Development of energy-tunable positronium beams employing the photodetachment of positronium negative ions

Koji Michishio, Yasuyuki Nagashima

  1. Department of Physics, Tokyo University of Science, Shinjuku, Tokyo 162-8601, Japan
  • Received June 24, 2014
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Abstract

Recent progress on the development of an energy-tunable positronium beam is reviewed. We describe experimental results for the efficient emission of positronium negative ions from alkali-metal coated tungsten surfaces. The ions generated using this technique have been accelerated by an electric field and photodetached in order to produce positronium beams with a hitherto unrealized energy range up to 1.9 keV.

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