γ-radiation-induced centers in irradiated perovskite SrCeO3 and their role in thermally stimulated reactions: Fluorescence, thermally stimulated luminescence, electron paramagnetic resonance and shielding studies.
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| Title: | γ-radiation-induced centers in irradiated perovskite SrCeO3 and their role in thermally stimulated reactions: Fluorescence, thermally stimulated luminescence, electron paramagnetic resonance and shielding studies. |
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| Authors: | Singh, Vijay1 (AUTHOR) vijayjiin2006@yahoo.com, Watanabe, S.2 (AUTHOR), Rao, T.K. Gundu2 (AUTHOR), Singh, V.P.3 (AUTHOR), Cano, Nilo F.4 (AUTHOR) |
| Source: | Ceramics International. Dec2024:Part B, Vol. 50 Issue 23, p50648-50656. 9p. |
| Subjects: | Mass attenuation coefficients, Electron paramagnetic resonance, X-ray powder diffraction, Radioactive wastes, Thermoluminescence |
| Abstract: | One promising host for actinide radioactive wastes is orthorhombic perovskite-type oxide. Perovskite SrCeO 3 ceramic was synthesized by nitrate-fuel combustion, which includes the organic fuel glycine. Powder X-ray diffraction was utilized to determine the structural features, and γ-radiation-induced changes and shielding properties were investigated in perovskite SrCeO 3. In a mixed-phase sample, a bright sky-blue luminescence was observed, and two thermoluminescence (TL) peaks were seen in irradiated SrCeO 3 ceramic. Electron paramagnetic resonance (EPR) spectrum in γ-irradiated SrCeO 3 ceramic had contributions from five defect centers. Center I having an isotropic g -value equal to 2.0283, is ascribed to an O− ion, while center II with an axial g -tensor with principal values g || = 2.0224 and g ⊥ = 2.0068 is determined as an O 2 − ion. O− ion relates to the TL peak at 215 °C. Center III with a g -value equal to 2.0009 is identified as an F+ center and is related to the 185 °C TL peak. The defect center associated with center IV is also identified as an F+ center. An additional defect center in the higher field region of the spectrum is assigned to an F+ center, and the center results from an F-center (oxygen vacancy with two electrons). The mass attenuation coefficients, effective atomic numbers, and half-value layer thicknesses concerning shielding property effectiveness were computed and it was found that the perovskite SrCeO 3 ceramic provided superior γ-shielding properties. [ABSTRACT FROM AUTHOR] |
| Copyright of Ceramics International is the property of Elsevier B.V. and its content may not be copied or emailed to multiple sites without the copyright holder's express written permission. Additionally, content may not be used with any artificial intelligence tools or machine learning technologies. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) | |
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| Items | – Name: Title Label: Title Group: Ti Data: γ-radiation-induced centers in irradiated perovskite SrCeO3 and their role in thermally stimulated reactions: Fluorescence, thermally stimulated luminescence, electron paramagnetic resonance and shielding studies. – Name: Author Label: Authors Group: Au Data: <searchLink fieldCode="AR" term="%22Singh%2C+Vijay%22">Singh, Vijay</searchLink><relatesTo>1</relatesTo> (AUTHOR)<i> vijayjiin2006@yahoo.com</i><br /><searchLink fieldCode="AR" term="%22Watanabe%2C+S%2E%22">Watanabe, S.</searchLink><relatesTo>2</relatesTo> (AUTHOR)<br /><searchLink fieldCode="AR" term="%22Rao%2C+T%2EK%2E+Gundu%22">Rao, T.K. Gundu</searchLink><relatesTo>2</relatesTo> (AUTHOR)<br /><searchLink fieldCode="AR" term="%22Singh%2C+V%2EP%2E%22">Singh, V.P.</searchLink><relatesTo>3</relatesTo> (AUTHOR)<br /><searchLink fieldCode="AR" term="%22Cano%2C+Nilo+F%2E%22">Cano, Nilo F.</searchLink><relatesTo>4</relatesTo> (AUTHOR) – Name: TitleSource Label: Source Group: Src Data: <searchLink fieldCode="JN" term="%22Ceramics+International%22">Ceramics International</searchLink>. Dec2024:Part B, Vol. 50 Issue 23, p50648-50656. 9p. – Name: Subject Label: Subjects Group: Su Data: <searchLink fieldCode="DE" term="%22Mass+attenuation+coefficients%22">Mass attenuation coefficients</searchLink><br /><searchLink fieldCode="DE" term="%22Electron+paramagnetic+resonance%22">Electron paramagnetic resonance</searchLink><br /><searchLink fieldCode="DE" term="%22X-ray+powder+diffraction%22">X-ray powder diffraction</searchLink><br /><searchLink fieldCode="DE" term="%22Radioactive+wastes%22">Radioactive wastes</searchLink><br /><searchLink fieldCode="DE" term="%22Thermoluminescence%22">Thermoluminescence</searchLink> – Name: Abstract Label: Abstract Group: Ab Data: One promising host for actinide radioactive wastes is orthorhombic perovskite-type oxide. Perovskite SrCeO 3 ceramic was synthesized by nitrate-fuel combustion, which includes the organic fuel glycine. Powder X-ray diffraction was utilized to determine the structural features, and γ-radiation-induced changes and shielding properties were investigated in perovskite SrCeO 3. In a mixed-phase sample, a bright sky-blue luminescence was observed, and two thermoluminescence (TL) peaks were seen in irradiated SrCeO 3 ceramic. Electron paramagnetic resonance (EPR) spectrum in γ-irradiated SrCeO 3 ceramic had contributions from five defect centers. Center I having an isotropic g -value equal to 2.0283, is ascribed to an O− ion, while center II with an axial g -tensor with principal values g || = 2.0224 and g ⊥ = 2.0068 is determined as an O 2 − ion. O− ion relates to the TL peak at 215 °C. Center III with a g -value equal to 2.0009 is identified as an F+ center and is related to the 185 °C TL peak. The defect center associated with center IV is also identified as an F+ center. An additional defect center in the higher field region of the spectrum is assigned to an F+ center, and the center results from an F-center (oxygen vacancy with two electrons). The mass attenuation coefficients, effective atomic numbers, and half-value layer thicknesses concerning shielding property effectiveness were computed and it was found that the perovskite SrCeO 3 ceramic provided superior γ-shielding properties. [ABSTRACT FROM AUTHOR] – Name: AbstractSuppliedCopyright Label: Group: Ab Data: <i>Copyright of Ceramics International is the property of Elsevier B.V. and its content may not be copied or emailed to multiple sites without the copyright holder's express written permission. Additionally, content may not be used with any artificial intelligence tools or machine learning technologies. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract.</i> (Copyright applies to all Abstracts.) |
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| RecordInfo | BibRecord: BibEntity: Identifiers: – Type: doi Value: 10.1016/j.ceramint.2024.09.409 Languages: – Code: eng Text: English PhysicalDescription: Pagination: PageCount: 9 StartPage: 50648 Subjects: – SubjectFull: Mass attenuation coefficients Type: general – SubjectFull: Electron paramagnetic resonance Type: general – SubjectFull: X-ray powder diffraction Type: general – SubjectFull: Radioactive wastes Type: general – SubjectFull: Thermoluminescence Type: general Titles: – TitleFull: γ-radiation-induced centers in irradiated perovskite SrCeO3 and their role in thermally stimulated reactions: Fluorescence, thermally stimulated luminescence, electron paramagnetic resonance and shielding studies. Type: main BibRelationships: HasContributorRelationships: – PersonEntity: Name: NameFull: Singh, Vijay – PersonEntity: Name: NameFull: Watanabe, S. – PersonEntity: Name: NameFull: Rao, T.K. Gundu – PersonEntity: Name: NameFull: Singh, V.P. – PersonEntity: Name: NameFull: Cano, Nilo F. IsPartOfRelationships: – BibEntity: Dates: – D: 05 M: 12 Text: Dec2024:Part B Type: published Y: 2024 Identifiers: – Type: issn-print Value: 02728842 Numbering: – Type: volume Value: 50 – Type: issue Value: 23 Titles: – TitleFull: Ceramics International Type: main |
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