Potentialities and practical limitations of absolute neutron dosimetry using thin films of uranium and thorium applied to the fission track dating
dc.contributor.author | Bigazzi, G. | |
dc.contributor.author | Guedes, S. | |
dc.contributor.author | Hadler, J. C. | |
dc.contributor.author | Iunes, P. J. | |
dc.contributor.author | Paulo, SR | |
dc.contributor.author | Oddone, M. | |
dc.contributor.author | Osorio, A. M. | |
dc.contributor.author | Zuniga, A. | |
dc.contributor.institution | CNR | |
dc.contributor.institution | Universidade Estadual de Campinas (UNICAMP) | |
dc.contributor.institution | Univ Fed Mato Grosso | |
dc.contributor.institution | Univ Pavia | |
dc.contributor.institution | Universidade Estadual Paulista (Unesp) | |
dc.contributor.institution | Instituto de Pesquisas Energéticas e Nucleares (IPEN) | |
dc.date.accessioned | 2014-05-20T15:21:00Z | |
dc.date.available | 2014-05-20T15:21:00Z | |
dc.date.issued | 1999-06-01 | |
dc.description.abstract | Neutron dosimetry using natural uranium and thorium thin films makes possible that mineral dating by the fission-track method can be accomplished, even when poor thermalized neutron facilities are employed. In this case, the contributions of the fissions of (235)U, (238)U and (232)Th induced by thermal, epithermal and fast neutrons to the population of tracks produced during irradiation are quantified through the combined use of natural uranium and thorium films.If the Th/U ratio of the sample is known, only one irradiation (where the sample and the films of uranium and thorium are present) is necessary to perform the dating. However, if that ratio is unknown, it can be determined through another irradiation where the mineral to be dated and both films are placed inside a cadmium box.Problems related with film manufacturing and calibration are discussed. Special attention is given to the utilization of thin films having very low uranium content. The problems faced suggest that it may be better to substitute these films by uranium doped standard glasses calibrated with thicker uranium films (thickness greater than 1.5 x 10(13) mu m). | en |
dc.description.affiliation | CNR, Ist Geocronol & Geochim Isotop, I-56100 Pisa, Italy | |
dc.description.affiliation | Univ Estadual Campinas, Inst Fis, BR-13083970 Campinas, SP, Brazil | |
dc.description.affiliation | Univ Fed Mato Grosso, ICET, Dept Fis, BR-78060900 Cuiaba, Mato Grosso, Brazil | |
dc.description.affiliation | Univ Pavia, Dipartimento Chim Gen, I-27100 Pavia, Italy | |
dc.description.affiliation | UNESP, Dept Ciências Ambientais, BR-19060900 Presidente Prudente, SP, Brazil | |
dc.description.affiliation | IPEN, Lima 41, Peru | |
dc.description.affiliationUnesp | UNESP, Dept Ciências Ambientais, BR-19060900 Presidente Prudente, SP, Brazil | |
dc.format.extent | 651-656 | |
dc.identifier | http://dx.doi.org/10.1016/S1350-4487(99)00161-4 | |
dc.identifier.citation | Radiation Measurements. Oxford: Pergamon-Elsevier B.V., v. 31, n. 1-6, p. 651-656, 1999. | |
dc.identifier.doi | 10.1016/S1350-4487(99)00161-4 | |
dc.identifier.issn | 1350-4487 | |
dc.identifier.uri | http://hdl.handle.net/11449/32190 | |
dc.identifier.wos | WOS:000081997700124 | |
dc.language.iso | eng | |
dc.publisher | Elsevier B.V. | |
dc.relation.ispartof | Radiation Measurements | |
dc.relation.ispartofjcr | 1.369 | |
dc.relation.ispartofsjr | 0,509 | |
dc.rights.accessRights | Acesso restrito | pt |
dc.source | Web of Science | |
dc.subject | neutron dosimetry | pt |
dc.subject | uranium thin films | pt |
dc.subject | thorium thin films | pt |
dc.subject | fission track dating | pt |
dc.title | Potentialities and practical limitations of absolute neutron dosimetry using thin films of uranium and thorium applied to the fission track dating | en |
dc.type | Artigo | pt |
dcterms.license | http://www.elsevier.com/about/open-access/open-access-policies/article-posting-policy | |
dcterms.rightsHolder | Elsevier B.V. | |
dspace.entity.type | Publication | |
unesp.author.lattes | 1543738193935256[7] | |
unesp.author.orcid | 0000-0002-3727-2574[7] | |
unesp.campus | Universidade Estadual Paulista (UNESP), Faculdade de Ciências e Tecnologia, Presidente Prudente | pt |
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