Development of an energy-tunable positronium beam apparatus using the photodetachment of the positronium negative ion

Synopsis We report on the development of an energy-tunable positronium beam apparatus at Tokyo University of Science. The positronium beam is generated using the photodetachment of the positronium negative ion, a bound state of one positron and two electrons. Positronium negative ions are efficientl...

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Bibliographic Details
Published in:Journal of physics. Conference series 2015-09, Vol.635 (8), p.82003
Main Authors: Chiari, L, Michishio, K, Oshima, N, Nagashima, Y
Format: Article
Language:English
Subjects:
Antimatter
Ion bombardment
Negative ions
Photodetachment
Physics
Positron beams
Positronium
Solid surfaces
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Summary:Synopsis We report on the development of an energy-tunable positronium beam apparatus at Tokyo University of Science. The positronium beam is generated using the photodetachment of the positronium negative ion, a bound state of one positron and two electrons. Positronium negative ions are efficiently emitted from a Na- coated tungsten surface by bombardment with a slow positron beam. The intermediate-energy positronium beam produced in this fashion can be used for fundamental studies of antimatter-matter interactions with solid surfaces.
ISSN:1742-6588
1742-6596
1742-6596
DOI:10.1088/1742-6596/635/8/082003