Efficient emission of positronium atoms from an Na-coated polycrystalline tungsten surface

Time-of-flight spectra for the ortho-positronium emitted from clean and Na-coated tungsten surfaces have been measured using the pulsed slow positron beam at KEK-IMSS slow positron facility. Emission efficiency of positronium from the Na-coated sample was found to be several times greater than that...

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Published in:Journal of physics. Conference series 2013-06, Vol.443 (1), p.12075-4
Main Authors: Terabe, H, Iida, S, Wada, K, Hyodo, T, Yagishita, A, Nagashima, Y
Format: Article
Language:English
Subjects:
Cleaning
Emission
Emittance
Physics
Positron beams
Positronium
Positrons
Spectral emittance
Tungsten
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description Time-of-flight spectra for the ortho-positronium emitted from clean and Na-coated tungsten surfaces have been measured using the pulsed slow positron beam at KEK-IMSS slow positron facility. Emission efficiency of positronium from the Na-coated sample was found to be several times greater than that from uncoated tungsten surfaces.
doi_str_mv 10.1088/1742-6596/443/1/012075
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subjects Cleaning
Emission
Emittance
Physics
Positron beams
Positronium
Positrons
Spectral emittance
Tungsten
title Efficient emission of positronium atoms from an Na-coated polycrystalline tungsten surface
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