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Muonium formation compared with positronium

TitleMuonium formation compared with positronium
Publication TypeBook Chapter
Year of Publication1997
AuthorsWalker, DC
EditorJean, YC, Eldrup, M, Schrader, DM, West, RN
Book TitlePositron Annihilation - Icpa-11 - Proceedings of the 11th International Conference on Positron Annihilation, Kansas City, Missouri, USA, May 1997
Series TitleMaterials Science Forum
PublisherTranstec Publications Ltd
ISBN Number0255-54760-87849-779-X
Keywordsformation mechanism, muonium, POSITRONIUM, solid N-2, superfluid He

Whereas the spur model of positronium formation enjoys widespread acceptance, the analogous model for muonium does not. Recent data has emerged from studies of rare systems, such as the superfluid state of liquid helium, the a phase of solid nitrogen and liquid Ne, in which muonium atoms form in a ’delayed’ manner and with yields that are influenced by the application of longitudinal electric fields. Charge neutralization is evidently responsible for the formation of these muonium atoms; but, it is suggested here, the electrons involved have escaped the spurs. so these are extra-spur processes not intra-spur ones.

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