Photoluminescence of gamma-irradiated Beryllium oxide
This study analyses the emission and excitation spectra of Beryllium Oxide (BeO) unirradiated and irradiated with 60Co gamma radiation because of its potential use in radiation dosimetry. Deconvolution of the spectra showed that using an excitation wavelength λexc = 330 nm, four emission bands cente...
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Published in | Applied radiation and isotopes Vol. 176; p. 109886 |
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01.10.2021
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Abstract | This study analyses the emission and excitation spectra of Beryllium Oxide (BeO) unirradiated and irradiated with 60Co gamma radiation because of its potential use in radiation dosimetry. Deconvolution of the spectra showed that using an excitation wavelength λexc = 330 nm, four emission bands centered at 404, 430, 468 and 545 nm are obtained; These emission bands appear in both irradiated and non-irradiated BeO; however, the irradiated samples exhibited an extra emission band centered at 416 nm. The excitation spectrum was obtained by setting the emission monochromator at a wavelength λ0 = 400 nm. By means of deconvolution, it was obtained that the emission spectrum of the non-irradiated samples is constituted by two bands centered at 307 and 331 nm, while for the irradiated samples the spectrum has three components centered at 297, 334 and 317 nm. In addition, it was found that the area under the curve of all emission bands decreases after irradiation, this may be due to the formation of electron-hole pairs after irradiation, which have the effect of reducing radiative phenomena, which it could be favorable for the applications of BeO in ionizing radiation dosimetry.
•Photoluminescence of unirradiated and gamma irradiated BeO was compared.•Deconvolution of PL spectra showed that for irradiated samples appears an extra peak in both emission and excitation spectra.•The PL intensity of BeO decreases with increasing radiation dose. |
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AbstractList | This study analyses the emission and excitation spectra of Beryllium Oxide (BeO) unirradiated and irradiated with 60Co gamma radiation because of its potential use in radiation dosimetry. Deconvolution of the spectra showed that using an excitation wavelength λexc = 330 nm, four emission bands centered at 404, 430, 468 and 545 nm are obtained; These emission bands appear in both irradiated and non-irradiated BeO; however, the irradiated samples exhibited an extra emission band centered at 416 nm. The excitation spectrum was obtained by setting the emission monochromator at a wavelength λ0 = 400 nm. By means of deconvolution, it was obtained that the emission spectrum of the non-irradiated samples is constituted by two bands centered at 307 and 331 nm, while for the irradiated samples the spectrum has three components centered at 297, 334 and 317 nm. In addition, it was found that the area under the curve of all emission bands decreases after irradiation, this may be due to the formation of electron-hole pairs after irradiation, which have the effect of reducing radiative phenomena, which it could be favorable for the applications of BeO in ionizing radiation dosimetry.
•Photoluminescence of unirradiated and gamma irradiated BeO was compared.•Deconvolution of PL spectra showed that for irradiated samples appears an extra peak in both emission and excitation spectra.•The PL intensity of BeO decreases with increasing radiation dose. |
ArticleNumber | 109886 |
Author | Sosa-Fonseca, Rebeca Martínez-Baltezar, Rodrigo Azorín-Nieto, Juan |
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CitedBy_id | crossref_primary_10_1016_j_nimb_2022_12_016 crossref_primary_10_1016_j_ecolind_2024_111756 |
Cites_doi | 10.1016/j.jeurceramsoc.2008.03.037 10.1002/1521-4095(200110)13:20<1557::AID-ADMA1557>3.0.CO;2-W 10.1016/j.apradiso.2019.04.003 10.1016/S0022-2313(01)00168-5 10.1016/j.radmeas.2013.01.069 10.1103/PhysRev.101.1250 10.1016/j.apradiso.2015.11.061 10.1016/S1350-4487(98)00084-5 10.1093/rpd/nci626 10.1016/j.radmeas.2007.01.052 10.1088/0022-3727/22/11/029 10.1088/0031-9155/15/4/006 10.1097/00004032-196901000-00001 10.1016/j.apradiso.2012.04.018 |
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SubjectTerms | Beryllium oxide Emission spectrum Excitation spectrum Photoluminescence |
Title | Photoluminescence of gamma-irradiated Beryllium oxide |
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