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Observation of muonium in zeolites

TitleObservation of muonium in zeolites
Publication TypeJournal Article
Year of Publication2003
AuthorsArseneau, DJ, Fleming, DG, Fyfe, CA, Senba, M
JournalPhysica B-Condensed Matter
Date PublishedFeb
Type of ArticleProceedings Paper
ISBN Number0921-4526
KeywordsCYCLOHEXADIENYL RADICALS, muonium, polarization, relaxation, zeolite

Muonium has been directly detected over a range of temperatures and fields by transverse field muSR in different zeolites: 3A, 13X, USY, ZSM-5, and S-115 (a high-silica form of ZSM-5), as well as in silica gel. The polarizations determined from data at 75 and 150 G were independent of both field and temperature. The amounts of Mu seen vary from similar to20% to 40%, with a large missing fraction seen in every case, which may be partly due to slow Mu formation. There is also a fast Mu relaxation rate seen in all samples. This is the first direct observation of Mu in zeolites. (C) 2002 Elsevier Science B.V. All rights reserved.

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