Please use this identifier to cite or link to this item: https://hdl.handle.net/10316/4465
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dc.contributor.authorKajcsos, Zs.-
dc.contributor.authorLiszkay, L.-
dc.contributor.authorDuplâtre, G.-
dc.contributor.authorLohonyai, L.-
dc.contributor.authorVarga, L.-
dc.contributor.authorLázár, K.-
dc.contributor.authorPál-Borbély, G.-
dc.contributor.authorBeyer, H. K.-
dc.contributor.authorCaullet, P.-
dc.contributor.authorPatarin, J.-
dc.contributor.authorLima, A. P. de-
dc.contributor.authorGil, C. Lopes-
dc.contributor.authorGordo, P. M.-
dc.contributor.authorMarques, M. F. Ferreira-
dc.date.accessioned2008-09-01T11:07:34Z-
dc.date.available2008-09-01T11:07:34Z-
dc.date.issued2003en_US
dc.identifier.citationRadiation Physics and Chemistry. 68:3-4 (2003) 363-368en_US
dc.identifier.urihttps://hdl.handle.net/10316/4465-
dc.description.abstractCorrelations between positronium (Ps) production features and positron annihilation (PA) parameters were investigated in various zeolite samples (MFI, mordenite, Na-Y). The contribution of 3[gamma]-annihilation on data registration was closely examined. Long lifetimes up to 135 ns and triplet Ps (o-Ps) fractions up to 30% were found. Even low amounts of adsorbed gases or water drastically change the PA pattern. It is concluded that in addition to the crystallographic free sites, large structural discontinuities also play an important role as they can trap Ps and provide it with vacuum-like survival conditions.en_US
dc.description.urihttp://www.sciencedirect.com/science/article/B6TVT-48KF810-2/1/8430b8c2999ae974e706966d129f1ae4en_US
dc.format.mimetypeaplication/PDFen
dc.language.isoengeng
dc.rightsopenAccesseng
dc.subjectZeolitesen_US
dc.subjectLong-living positroniumen_US
dc.subjectPorous structureen_US
dc.subject3[gamma]-annihilationen_US
dc.titlePositron and positronium in porous media: zeolitesen_US
dc.typearticleen_US
dc.identifier.doi10.1016/S0969-806X(03)00185-3-
uc.controloAutoridadeSim-
item.openairecristypehttp://purl.org/coar/resource_type/c_18cf-
item.openairetypearticle-
item.cerifentitytypePublications-
item.grantfulltextopen-
item.fulltextCom Texto completo-
item.languageiso639-1en-
crisitem.author.researchunitCFisUC – Center for Physics of the University of Coimbra-
crisitem.author.orcid0000-0002-8679-8134-
Appears in Collections:FCTUC Física - Artigos em Revistas Internacionais
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