Thermoluminescence and defect centers in β-CaSiO3 polycrystal

Gonzales-Lorenzo, Carlos D.; Rao, T.K. Gundu; Cano, Nilo F.; Silva-Carrera, Betzabel N.; Rocca, René Rojas; Cuevas-Arizaca, Edy E.; Ayala-Arenas, Jorge S.; Watanabe, Shigueo

doi:10.1016/j.jlumin.2019.116783

Cited by 9 publications

(2 citation statements)

References 42 publications

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“…From the reasons, the peak positions of each sample were slightly shifted. The peaks were also observed in undoped CaSiO 3 , 27,43) so the origin should be ascribed to the host defects. The 0.5% Ce-doped sample showed distinguishably high TSL intensity among the samples, and as shown in Table I, the LY of the 0.5% Ce-doped sample was remarkably low among the samples.…”

Section: Tsl Propertiesmentioning

confidence: 84%

Characterization of CaSiO₃:Ce crystals for α- and X-ray detection

Nakamura¹,

Kantuptim²,

Nakauchi³

et al. 2021

Jpn. J. Appl. Phys.

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CaSiO3 crystals doped with 0.5%, 1.0% and 2.0% Ce were developed using the floating zone method, and the scintillation and thermally-stimulated luminescence (TSL) properties were evaluated. Under X-ray irradiation, the emission peaks due to the 5d–4f transitions of Ce3+ appeared at 360 nm in all the samples. Under 241Am 5.5 MeV α-ray irradiation, a clear full-energy peak appeared in all the samples, and the light yield of the 2.0% Ce doped-sample was 1040 ph/5.5 MeV-α. As a TSL dosimeter, the samples were very sensitive to X-rays and showed a good linear response from 0.1 to 1000 mGy, which was equivalent to the measurable sensitivity of commercial dosimeters for personal dose monitoring.

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Section: Tsl Propertiesmentioning

confidence: 84%

Characterization of CaSiO₃:Ce crystals for α- and X-ray detection

Nakamura¹,

Kantuptim²,

Nakauchi³

et al. 2021

Jpn. J. Appl. Phys.

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“…Then, Figure 5.16: TL emission spectrum for β-irradiated CaSiO 3 : TL intensity-versuswavelength-versus-temperature. After [132].…”

Section: Tl Emission Spectrummentioning

confidence: 99%

Production of synthetic polycrystals of CaSiO3 and their study as new detectors of gamma radiation, thermal neutrons and accelerated ions.

Lorenzo¹

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Em especial ao prof. Shigueo Watanabe pela sua orientação, paciência, disposição e apoio no desenvolvimento deste trabalho, incentivando a maioria das minhas decisões, agradeço muito. Ao Conselho Nacional de desenvolvimento Científico e Tecnológico (CNPq) pelo apoio financeiro. À Eng. Elizabeth Ribeiro Somessari, ao Eng. Carlos Gaia da Silveira do CTR-IPEN-SP; ao Aldo Oliveira e Vicente de Paulo Campos do GMR-IPEN-SP pelas inúmeras vezes que nos atenderam gentilmente para as irradiações gama realizadas neste trabalho. À Professora Carmen Cecilia Bueno do Centro de Tecnologia das Radiações-IPEN pela ajuda nas irradiações com nêutrons no reator nuclear de pesquisa IEA-R1 do IPEN. Ao Prof. Gundu Rao pela análise das medidas de EPR as quais ajudaram muito no aprimoramento do presente trabalho, e pela ajuda na revisão do inglês. Ao prof. Satoshi Kodaira do Instituto Nacional de Ciências Radiológicas (NIRS) em Chiba-Japão e à Dra. Luana Nascimento do Centro Belga de Pesquisa Nuclear (SCK•CEN) pela ajuda nas irradiações das nossas amostras com prótons e íons de carbono no NIRS. Ao Prof. Sergey Nikiforov e à colega Daria Ananchenko do Instituto de Física e Tecnologia da Universidade Federal dos Urais em Ecaterimburgo-Rússia por me aceitar no seu laboratório como parte de um estágio de pesquisa. ii Ao Dr. Tássio A. Cavalieri do Centro de Engenharia Nuclear do Instituto de Pesquisas Energéticas e Nucleares (CEN-IPEN-SP) pela importante colaboração e ajuda com as simulações de Monte Carlo. À Nancy Kuniko Umisedo do Laboratório de Dosimetria do IFUSP pelas irradiações com raios X. Aos Professores Nilo Cano, René Rojas e Fernando Chubaci pela paciência, compreensão e pela sua disponibilidade para responder às minhas dúvidas no desenvolvimento deste trabalho. À Dra. Roseli Gennari pela ajuda na mistura das amostras e pelas sugestões na produção dos policristais usados neste trabalho. À Edna Toledo pela ajuda e disposição nos processos burocráticos e os muitos momentos agradáveis na hora do café no LACIFID.

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Identification of defect centers responsible for thermoluminescence emission in sol-gel synthesized calcium silicate phosphor

Vilca,

Rao,

Rocca

et al. 2023

Applied Radiation and Isotopes

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Thermoluminescence and defect centers in β-CaSiO3 polycrystal

Cited by 9 publications

References 42 publications

Characterization of CaSiO₃:Ce crystals for α- and X-ray detection

Characterization of CaSiO₃:Ce crystals for α- and X-ray detection

Production of synthetic polycrystals of CaSiO3 and their study as new detectors of gamma radiation, thermal neutrons and accelerated ions.

Identification of defect centers responsible for thermoluminescence emission in sol-gel synthesized calcium silicate phosphor

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Thermoluminescence and defect centers in β-CaSiO3 polycrystal

Cited by 9 publications

References 42 publications

Characterization of CaSiO3:Ce crystals for α- and X-ray detection

Characterization of CaSiO3:Ce crystals for α- and X-ray detection

Production of synthetic polycrystals of CaSiO3 and their study as new detectors of gamma radiation, thermal neutrons and accelerated ions.

Identification of defect centers responsible for thermoluminescence emission in sol-gel synthesized calcium silicate phosphor

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Characterization of CaSiO₃:Ce crystals for α- and X-ray detection

Characterization of CaSiO₃:Ce crystals for α- and X-ray detection