Positron and positronium annihilation patterns in zeolites and bulk ceramics
Autor(a) principal: | |
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Data de Publicação: | 2007 |
Outros Autores: | , , , , , , , , , , , |
Tipo de documento: | Artigo |
Idioma: | eng |
Título da fonte: | Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos) |
Texto Completo: | http://hdl.handle.net/10316/8202 https://doi.org/10.1002/pssc.200675800 |
Resumo: | Positron lifetime (LT) measurements have revealed that in porous media the annihilation pattern is probably dominated by a near-saturation level trapping both for the positron and the positronium as well, which masks the contribution from the ldquofree annihilationrdquo, i.e., annihilation from delocalised positrons. In this work we compare positron lifetime spectra of crystalline zeolites with bulk ceramic materials fabricated by sintering from the same constituents as the zeolites and analyse common features and differences between them. For the dense ceramic samples the contribution from long-living components to the annihilation pattern is substantially lower than that for the zeolites. The results are analysed with the aim to extract new knowledge for the zeolites and for the sensitivity limits for free volume studies in ceramics. (© 2007 WILEY-VCH Verlag GmbH & Co. KGaA, Weinheim) |
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Positron and positronium annihilation patterns in zeolites and bulk ceramicsPositron lifetime (LT) measurements have revealed that in porous media the annihilation pattern is probably dominated by a near-saturation level trapping both for the positron and the positronium as well, which masks the contribution from the ldquofree annihilationrdquo, i.e., annihilation from delocalised positrons. In this work we compare positron lifetime spectra of crystalline zeolites with bulk ceramic materials fabricated by sintering from the same constituents as the zeolites and analyse common features and differences between them. For the dense ceramic samples the contribution from long-living components to the annihilation pattern is substantially lower than that for the zeolites. The results are analysed with the aim to extract new knowledge for the zeolites and for the sensitivity limits for free volume studies in ceramics. (© 2007 WILEY-VCH Verlag GmbH & Co. KGaA, Weinheim)2007info:eu-repo/semantics/publishedVersioninfo:eu-repo/semantics/articlehttp://hdl.handle.net/10316/8202http://hdl.handle.net/10316/8202https://doi.org/10.1002/pssc.200675800engphysica status solidi (c). 4:10 (2007) 3810-3813Kajcsos, Zs.Kosanovic', C.Liszkay, L.Major, P.Lohonyai, L.Zalán, P.Lázár, K.Bosnar, S.Subotic, B.Bosnar, D.Havancsák, K.Gordo, P. M.Tomascaronic', N.info:eu-repo/semantics/openAccessreponame:Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos)instname:Agência para a Sociedade do Conhecimento (UMIC) - FCT - Sociedade da Informaçãoinstacron:RCAAP2021-11-03T09:15:14Zoai:estudogeral.uc.pt:10316/8202Portal AgregadorONGhttps://www.rcaap.pt/oai/openaireopendoar:71602024-03-19T20:59:41.212493Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos) - Agência para a Sociedade do Conhecimento (UMIC) - FCT - Sociedade da Informaçãofalse |
dc.title.none.fl_str_mv |
Positron and positronium annihilation patterns in zeolites and bulk ceramics |
title |
Positron and positronium annihilation patterns in zeolites and bulk ceramics |
spellingShingle |
Positron and positronium annihilation patterns in zeolites and bulk ceramics Kajcsos, Zs. |
title_short |
Positron and positronium annihilation patterns in zeolites and bulk ceramics |
title_full |
Positron and positronium annihilation patterns in zeolites and bulk ceramics |
title_fullStr |
Positron and positronium annihilation patterns in zeolites and bulk ceramics |
title_full_unstemmed |
Positron and positronium annihilation patterns in zeolites and bulk ceramics |
title_sort |
Positron and positronium annihilation patterns in zeolites and bulk ceramics |
author |
Kajcsos, Zs. |
author_facet |
Kajcsos, Zs. Kosanovic', C. Liszkay, L. Major, P. Lohonyai, L. Zalán, P. Lázár, K. Bosnar, S. Subotic, B. Bosnar, D. Havancsák, K. Gordo, P. M. Tomascaronic', N. |
author_role |
author |
author2 |
Kosanovic', C. Liszkay, L. Major, P. Lohonyai, L. Zalán, P. Lázár, K. Bosnar, S. Subotic, B. Bosnar, D. Havancsák, K. Gordo, P. M. Tomascaronic', N. |
author2_role |
author author author author author author author author author author author author |
dc.contributor.author.fl_str_mv |
Kajcsos, Zs. Kosanovic', C. Liszkay, L. Major, P. Lohonyai, L. Zalán, P. Lázár, K. Bosnar, S. Subotic, B. Bosnar, D. Havancsák, K. Gordo, P. M. Tomascaronic', N. |
description |
Positron lifetime (LT) measurements have revealed that in porous media the annihilation pattern is probably dominated by a near-saturation level trapping both for the positron and the positronium as well, which masks the contribution from the ldquofree annihilationrdquo, i.e., annihilation from delocalised positrons. In this work we compare positron lifetime spectra of crystalline zeolites with bulk ceramic materials fabricated by sintering from the same constituents as the zeolites and analyse common features and differences between them. For the dense ceramic samples the contribution from long-living components to the annihilation pattern is substantially lower than that for the zeolites. The results are analysed with the aim to extract new knowledge for the zeolites and for the sensitivity limits for free volume studies in ceramics. (© 2007 WILEY-VCH Verlag GmbH & Co. KGaA, Weinheim) |
publishDate |
2007 |
dc.date.none.fl_str_mv |
2007 |
dc.type.status.fl_str_mv |
info:eu-repo/semantics/publishedVersion |
dc.type.driver.fl_str_mv |
info:eu-repo/semantics/article |
format |
article |
status_str |
publishedVersion |
dc.identifier.uri.fl_str_mv |
http://hdl.handle.net/10316/8202 http://hdl.handle.net/10316/8202 https://doi.org/10.1002/pssc.200675800 |
url |
http://hdl.handle.net/10316/8202 https://doi.org/10.1002/pssc.200675800 |
dc.language.iso.fl_str_mv |
eng |
language |
eng |
dc.relation.none.fl_str_mv |
physica status solidi (c). 4:10 (2007) 3810-3813 |
dc.rights.driver.fl_str_mv |
info:eu-repo/semantics/openAccess |
eu_rights_str_mv |
openAccess |
dc.source.none.fl_str_mv |
reponame:Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos) instname:Agência para a Sociedade do Conhecimento (UMIC) - FCT - Sociedade da Informação instacron:RCAAP |
instname_str |
Agência para a Sociedade do Conhecimento (UMIC) - FCT - Sociedade da Informação |
instacron_str |
RCAAP |
institution |
RCAAP |
reponame_str |
Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos) |
collection |
Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos) |
repository.name.fl_str_mv |
Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos) - Agência para a Sociedade do Conhecimento (UMIC) - FCT - Sociedade da Informação |
repository.mail.fl_str_mv |
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1799133888257196032 |