Optical properties and radiation response of Li ion-doped CsI scintillator crystal

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dc.contributor.authorPEREIRA, MARIA da C.C.pt_BR
dc.contributor.authorMADI FILHO, TUFICpt_BR
dc.contributor.authorBERRETTA, JOSE R.pt_BR
dc.contributor.authorTOMAZ, LUCAS F.pt_BR
dc.contributor.authorMADI, MIRIAM N.pt_BR
dc.coverageInternacionalpt_BR
dc.date.accessioned2020-04-02T18:18:05Z
dc.date.available2020-04-02T18:18:05Z
dc.date.issued2019pt_BR
dc.description.abstractScintillators are materials that convert the energy of ionizing radiation into a flash of light. Due to the existence of different types of scintillators, they are classified into three groups according to their physicochemical characteristics, namely, inorganic, organic and gaseous scintillators. Among the inorganic crystals, the most frequently used as scintillator consist of alkali metals, in particular alkaline iodides. Scintillation materials have many applications, for instance in medical imaging, security, physics, biology, non-destructive inspection and medicine. In this study, lithium doped CsI scintillator crystals were grown using the vertical Bridgman technique. The concentration of the lithium doping element (Li) studied was 10-4 M to 10-1 M. Analyses were carried out to evaluate the developed scintillators with regard to luminescence emission and optical transmittance. The luminescence emission spectra of these crystals were measured with a monochromator for gamma radiation from 137Cs source excitation. The determination of the dopant distribution along the crystalline axis allowed the identification of the region with Li concentration uniformity, which is the region of the crystalline volume indicated for use as a radiation detector. The crystals were excited with neutron radiation from AmBe source, with the energy range of 1 MeV to 12 MeV. As neutron sources also generate gamma radiation, which can interfere with the measurement, it is necessary that the detector be able to discriminate the presence of such radiation. Accordingly, experiments were performed using gamma radiation in the energy range of 59 keV to 1333 keV in order to verify the ability of the detector to discriminate the presence of different types of radiation.pt_BR
dc.format.extent131-135pt_BR
dc.identifier.citationPEREIRA, MARIA da C.C.; MADI FILHO, TUFIC; BERRETTA, JOSE R.; TOMAZ, LUCAS F.; MADI, MIRIAM N. Optical properties and radiation response of Li ion-doped CsI scintillator crystal. <b>RAP Conference Proceedings</b>, v. 4, p. 131-135, 2019. DOI: <a href="https://dx.doi.org/10.37392/RapProc.2019.26">10.37392/RapProc.2019.26</a>. Disponível em: http://repositorio.ipen.br/handle/123456789/31060.
dc.identifier.doi10.37392/RapProc.2019.26pt_BR
dc.identifier.issn2466-4626pt_BR
dc.identifier.percentilfiSem Percentilpt_BR
dc.identifier.percentilfiCiteScoreSem Percentil CiteScore
dc.identifier.urihttp://repositorio.ipen.br/handle/123456789/31060
dc.identifier.vol4pt_BR
dc.relation.ispartofRAP Conference Proceedingspt_BR
dc.rightsopenAccesspt_BR
dc.sourceInternational Conference on Radiation Applications, September 16-19, 2019, Belgrade, Serbiapt_BR
dc.subjectphosphors
dc.subjectradiation detectors
dc.subjectcrystal growth
dc.subjectneutron sources
dc.subjectlithium
dc.subjectdoped materials
dc.subjectbridgman method
dc.subjectcesium iodides
dc.subjectoptical properties
dc.subjectluminescence
dc.subjectspectra
dc.subjectradiation sources
dc.subjectcrystal doping
dc.titleOptical properties and radiation response of Li ion-doped CsI scintillator crystalpt_BR
dc.typeArtigo de periódicopt_BR
dspace.entity.typePublication
ipen.autorLUCAS FAUSTINO TOMAZ
ipen.autorMIRIAM NIERI MADI
ipen.autorJOSE ROBERTO BERRETTA
ipen.autorTUFIC MADI FILHO
ipen.autorMARIA DA CONCEICAO COSTA PEREIRA
ipen.codigoautor14233
ipen.codigoautor14014
ipen.codigoautor710
ipen.codigoautor1231
ipen.codigoautor193
ipen.contributor.ipenauthorLUCAS FAUSTINO TOMAZ
ipen.contributor.ipenauthorMIRIAM NIERI MADI
ipen.contributor.ipenauthorJOSE ROBERTO BERRETTA
ipen.contributor.ipenauthorTUFIC MADI FILHO
ipen.contributor.ipenauthorMARIA DA CONCEICAO COSTA PEREIRA
ipen.date.recebimento20-04
ipen.identifier.fiSem F.I.pt_BR
ipen.identifier.fiCiteScoreSem CiteScore
ipen.identifier.ipendoc26850pt_BR
ipen.type.genreArtigo
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relation.isAuthorOfPublicatione05a9eb7-8471-4f24-9991-018ed148a2e2
relation.isAuthorOfPublicationc6d485fe-9927-427a-93a0-0104d2bf801e
relation.isAuthorOfPublication9dc6d02e-963a-42fd-96d8-d9d18a3ec6a8
relation.isAuthorOfPublication.latestForDiscovery9dc6d02e-963a-42fd-96d8-d9d18a3ec6a8
sigepi.autor.atividadeMADI, MIRIAM N.:14014:-1:Npt_BR
sigepi.autor.atividadeTOMAZ, LUCAS F.:14233:240:Npt_BR
sigepi.autor.atividadeBERRETTA, JOSE R.:710:240:Npt_BR
sigepi.autor.atividadeMADI FILHO, TUFIC:1231:240:Npt_BR
sigepi.autor.atividadePEREIRA, MARIA da C.C.:193:240:Spt_BR
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