Luminescence and EPR spectroscopy of neutron-irradiated single crystals of magnesium aluminium spinel.
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| Title: | Luminescence and EPR spectroscopy of neutron-irradiated single crystals of magnesium aluminium spinel. |
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| Authors: | Mironova-Ulmane, N.1 nina@cfi.lu.lv, Skvortsova, V.1, Pavlenko, A.1, Feldbach, E.2, Lushchik, A.2, Lushchik, Ch.2, Churmanov, V.3, Ivanov, D.3, Ivanov, V.3, Aleksanyan, E.4 |
| Source: | Radiation Measurements. Jul2016, Vol. 90, p122-126. 5p. |
| Subjects: | Electron paramagnetic resonance spectroscopy, Neutrons, Single crystals, Spinel, Irradiation, Cathodoluminescence, Photoluminescence |
| Abstract: | Neutron irradiated single crystals of stoichiometric MgAl 2 O 4 and MgAl 2 O 4 :Mn 2+ (0.15 wt. %) were studied using the methods of luminescence spectroscopy and versions of electron paramagnetic resonance. In stoichiometric MgAl 2 O 4 :Mn 2+ single crystals, the transition of a part of manganese impurity ions from tetrahedral to octahedral coordination, caused by irradiation with fast fission neutrons, is detected using photoluminescence spectra. This fact confirms the partial inversion of a normal spinel due to neutron-irradiation. Using pulse EPR technique it is shown that an electron in the field of oxygen vacancy (i.e. from neutron-irradiation induced F + centres, which are spatially separated from each other) is in hyperfine interaction only with neighbouring 27 Al nuclei with nuclear spin 5/2. [ABSTRACT FROM AUTHOR] |
| Copyright of Radiation Measurements is the property of Pergamon Press - An Imprint of Elsevier Science 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.) | |
| Database: | Engineering Source |
| FullText | Text: Availability: 0 |
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| Header | DbId: egs DbLabel: Engineering Source An: 115846698 AccessLevel: 6 PubType: Academic Journal PubTypeId: academicJournal PreciseRelevancyScore: 0 |
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| Items | – Name: Title Label: Title Group: Ti Data: Luminescence and EPR spectroscopy of neutron-irradiated single crystals of magnesium aluminium spinel. – Name: Author Label: Authors Group: Au Data: <searchLink fieldCode="AR" term="%22Mironova-Ulmane%2C+N%2E%22">Mironova-Ulmane, N.</searchLink><relatesTo>1</relatesTo><i> nina@cfi.lu.lv</i><br /><searchLink fieldCode="AR" term="%22Skvortsova%2C+V%2E%22">Skvortsova, V.</searchLink><relatesTo>1</relatesTo><br /><searchLink fieldCode="AR" term="%22Pavlenko%2C+A%2E%22">Pavlenko, A.</searchLink><relatesTo>1</relatesTo><br /><searchLink fieldCode="AR" term="%22Feldbach%2C+E%2E%22">Feldbach, E.</searchLink><relatesTo>2</relatesTo><br /><searchLink fieldCode="AR" term="%22Lushchik%2C+A%2E%22">Lushchik, A.</searchLink><relatesTo>2</relatesTo><br /><searchLink fieldCode="AR" term="%22Lushchik%2C+Ch%2E%22">Lushchik, Ch.</searchLink><relatesTo>2</relatesTo><br /><searchLink fieldCode="AR" term="%22Churmanov%2C+V%2E%22">Churmanov, V.</searchLink><relatesTo>3</relatesTo><br /><searchLink fieldCode="AR" term="%22Ivanov%2C+D%2E%22">Ivanov, D.</searchLink><relatesTo>3</relatesTo><br /><searchLink fieldCode="AR" term="%22Ivanov%2C+V%2E%22">Ivanov, V.</searchLink><relatesTo>3</relatesTo><br /><searchLink fieldCode="AR" term="%22Aleksanyan%2C+E%2E%22">Aleksanyan, E.</searchLink><relatesTo>4</relatesTo> – Name: TitleSource Label: Source Group: Src Data: <searchLink fieldCode="JN" term="%22Radiation+Measurements%22">Radiation Measurements</searchLink>. Jul2016, Vol. 90, p122-126. 5p. – Name: Subject Label: Subjects Group: Su Data: <searchLink fieldCode="DE" term="%22Electron+paramagnetic+resonance+spectroscopy%22">Electron paramagnetic resonance spectroscopy</searchLink><br /><searchLink fieldCode="DE" term="%22Neutrons%22">Neutrons</searchLink><br /><searchLink fieldCode="DE" term="%22Single+crystals%22">Single crystals</searchLink><br /><searchLink fieldCode="DE" term="%22Spinel%22">Spinel</searchLink><br /><searchLink fieldCode="DE" term="%22Irradiation%22">Irradiation</searchLink><br /><searchLink fieldCode="DE" term="%22Cathodoluminescence%22">Cathodoluminescence</searchLink><br /><searchLink fieldCode="DE" term="%22Photoluminescence%22">Photoluminescence</searchLink> – Name: Abstract Label: Abstract Group: Ab Data: Neutron irradiated single crystals of stoichiometric MgAl 2 O 4 and MgAl 2 O 4 :Mn 2+ (0.15 wt. %) were studied using the methods of luminescence spectroscopy and versions of electron paramagnetic resonance. In stoichiometric MgAl 2 O 4 :Mn 2+ single crystals, the transition of a part of manganese impurity ions from tetrahedral to octahedral coordination, caused by irradiation with fast fission neutrons, is detected using photoluminescence spectra. This fact confirms the partial inversion of a normal spinel due to neutron-irradiation. Using pulse EPR technique it is shown that an electron in the field of oxygen vacancy (i.e. from neutron-irradiation induced F + centres, which are spatially separated from each other) is in hyperfine interaction only with neighbouring 27 Al nuclei with nuclear spin 5/2. [ABSTRACT FROM AUTHOR] – Name: AbstractSuppliedCopyright Label: Group: Ab Data: <i>Copyright of Radiation Measurements is the property of Pergamon Press - An Imprint of Elsevier Science 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.radmeas.2015.12.020 Languages: – Code: eng Text: English PhysicalDescription: Pagination: PageCount: 5 StartPage: 122 Subjects: – SubjectFull: Electron paramagnetic resonance spectroscopy Type: general – SubjectFull: Neutrons Type: general – SubjectFull: Single crystals Type: general – SubjectFull: Spinel Type: general – SubjectFull: Irradiation Type: general – SubjectFull: Cathodoluminescence Type: general – SubjectFull: Photoluminescence Type: general Titles: – TitleFull: Luminescence and EPR spectroscopy of neutron-irradiated single crystals of magnesium aluminium spinel. Type: main BibRelationships: HasContributorRelationships: – PersonEntity: Name: NameFull: Mironova-Ulmane, N. – PersonEntity: Name: NameFull: Skvortsova, V. – PersonEntity: Name: NameFull: Pavlenko, A. – PersonEntity: Name: NameFull: Feldbach, E. – PersonEntity: Name: NameFull: Lushchik, A. – PersonEntity: Name: NameFull: Lushchik, Ch. – PersonEntity: Name: NameFull: Churmanov, V. – PersonEntity: Name: NameFull: Ivanov, D. – PersonEntity: Name: NameFull: Ivanov, V. – PersonEntity: Name: NameFull: Aleksanyan, E. IsPartOfRelationships: – BibEntity: Dates: – D: 01 M: 07 Text: Jul2016 Type: published Y: 2016 Identifiers: – Type: issn-print Value: 13504487 Numbering: – Type: volume Value: 90 Titles: – TitleFull: Radiation Measurements Type: main |
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