Positronium and positronium negative ion emission from alkali-metal coated tungsten surfaces

The emission efficiencies of positronium atoms and positronium negative ions from tungsten surfaces increase by alkali-metal coating. We have studied the positronium emission from alkali-metal coated surfaces using the positronium time-of-flight method. We have also performed the observation of the...

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Bibliographic Details
Published in:Journal of physics. Conference series 2014-01, Vol.505 (1), p.12037-6
Main Authors: Nagashima, Y, Michishio, K, Terabe, H, Suzuki, R H, Iida, S, Yamashita, T, Kimura, R, Tachibana, T, Mochizuki, I, Wada, K, Yagishita, A, Hyodo, T
Format: Article
Language:English
Subjects:
Beams (radiation)
Coating
Emission
Emission analysis
Emittance
Ion emission
Metal coatings
Negative ions
Photodetachment
Physics
Positronium
Time of flight method
Tungsten
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Summary:The emission efficiencies of positronium atoms and positronium negative ions from tungsten surfaces increase by alkali-metal coating. We have studied the positronium emission from alkali-metal coated surfaces using the positronium time-of-flight method. We have also performed the observation of the photodetachment of Ps− emitted from a Na-coated surface and the production of an energy-tunable Ps beam employing the photodetachment technique. This paper describes our recent studies using alkali-metal coated surfaces.
ISSN:1742-6588
1742-6596
DOI:10.1088/1742-6596/505/1/012037