Synthetic polycrystals of CaSiO3 un-doped and Cd, B, Dy, Eu-doped for gamma and neutron detection

Carlos D. Gonzales-Lorenzo; Shigueo Watanabe; Nilo F. Cano; Jorge Sabino Ayala Arenas; Carmen C. Bueno

doi:10.1016/j.jlumin.2018.04.037

Synthetic polycrystals of CaSiO₃ un-doped and Cd, B, Dy, Eu-doped for gamma and neutron detection

Carlos D. Gonzales-Lorenzo, Shigueo Watanabe, Nilo F. Cano, Jorge Sabino Ayala Arenas, Carmen C. Bueno

Departamento Académico de Física

Research output: Contribution to journal › Article › peer-review

5 Scopus citations

Abstract

The undoped and B, Cd, Dy, Eu doped synthetic CaSiO₃ polycrystals were produced in the laboratory. They are very sensitive γ-ray detectors with main prominent TL peak occurring at about 270 °C, this peak was obtained using 4 °C/s heating rate. The TL behavior changes very little by doping with B, Cd and Dy while Eu doping brings changes. These minerals can be used also for neutron dosimetry. Thermal neutrons react with Ca, Si and O through (n, γ) process and γ emitted in this reaction added to γ-rays of the reactor that produces thermal neutrons and are responsible for induction of thermoluminiscence. The TL response of CaSiO₃ is linear for dose < 10 Gy and then has a supralinear behavior up to about 7 kGy and saturating beyond.

Original language	English
Pages (from-to)	5-10
Number of pages	6
Journal	Journal of Luminescence
Volume	201
DOIs	https://doi.org/10.1016/j.jlumin.2018.04.037
State	Published - Sep 2018

Bibliographical note

Funding Information:
The authors wish to thank Ms. E. Somessari and Mr. C. Gaia, Institute for Energy and Nuclear Researches (IPEN), Brazil, for kindly carrying out the irradiation of the samples. To FAPESP (Process number 2014/03085-0 ) for partial financial support and to CNPq for fellowship to C.D. Gonzales-Lorenzo (Process number 162741/2015-4 ).

Publisher Copyright:
© 2018 Elsevier B.V.

Keywords

CaSiO
Gamma and neutron dosimetry
Thermoluminescence

Access to Document

10.1016/j.jlumin.2018.04.037

Cite this

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title = "Synthetic polycrystals of CaSiO3 un-doped and Cd, B, Dy, Eu-doped for gamma and neutron detection",

abstract = "The undoped and B, Cd, Dy, Eu doped synthetic CaSiO3 polycrystals were produced in the laboratory. They are very sensitive γ-ray detectors with main prominent TL peak occurring at about 270 °C, this peak was obtained using 4 °C/s heating rate. The TL behavior changes very little by doping with B, Cd and Dy while Eu doping brings changes. These minerals can be used also for neutron dosimetry. Thermal neutrons react with Ca, Si and O through (n, γ) process and γ emitted in this reaction added to γ-rays of the reactor that produces thermal neutrons and are responsible for induction of thermoluminiscence. The TL response of CaSiO3 is linear for dose < 10 Gy and then has a supralinear behavior up to about 7 kGy and saturating beyond.",

keywords = "CaSiO, Gamma and neutron dosimetry, Thermoluminescence",

author = "Gonzales-Lorenzo, {Carlos D.} and Shigueo Watanabe and Cano, {Nilo F.} and {Ayala Arenas}, {Jorge Sabino} and Bueno, {Carmen C.}",

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T1 - Synthetic polycrystals of CaSiO3 un-doped and Cd, B, Dy, Eu-doped for gamma and neutron detection

AU - Gonzales-Lorenzo, Carlos D.

AU - Watanabe, Shigueo

AU - Cano, Nilo F.

AU - Ayala Arenas, Jorge Sabino

AU - Bueno, Carmen C.

PY - 2018/9

Y1 - 2018/9

N2 - The undoped and B, Cd, Dy, Eu doped synthetic CaSiO3 polycrystals were produced in the laboratory. They are very sensitive γ-ray detectors with main prominent TL peak occurring at about 270 °C, this peak was obtained using 4 °C/s heating rate. The TL behavior changes very little by doping with B, Cd and Dy while Eu doping brings changes. These minerals can be used also for neutron dosimetry. Thermal neutrons react with Ca, Si and O through (n, γ) process and γ emitted in this reaction added to γ-rays of the reactor that produces thermal neutrons and are responsible for induction of thermoluminiscence. The TL response of CaSiO3 is linear for dose < 10 Gy and then has a supralinear behavior up to about 7 kGy and saturating beyond.

AB - The undoped and B, Cd, Dy, Eu doped synthetic CaSiO3 polycrystals were produced in the laboratory. They are very sensitive γ-ray detectors with main prominent TL peak occurring at about 270 °C, this peak was obtained using 4 °C/s heating rate. The TL behavior changes very little by doping with B, Cd and Dy while Eu doping brings changes. These minerals can be used also for neutron dosimetry. Thermal neutrons react with Ca, Si and O through (n, γ) process and γ emitted in this reaction added to γ-rays of the reactor that produces thermal neutrons and are responsible for induction of thermoluminiscence. The TL response of CaSiO3 is linear for dose < 10 Gy and then has a supralinear behavior up to about 7 kGy and saturating beyond.

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