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(Reference retrieved automatically from Web of Science through information on FAPESP grant and its corresponding number as mentioned in the publication by the authors.)

OSL response of alpha-Al2O3:C, Mg exposed to beta and UVC radiation: A comparative investigation

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Munoz, J. M. [1] ; Lima, L. S. [2] ; Yoshimura, E. M. [2] ; Jacobsohn, L. G. [3] ; Trindade, N. M. [2, 1]
Total Authors: 5
[1] Fed Inst Educ Sci & Technol Sao Paulo, Dept Phys, Sao Paulo, SP - Brazil
[2] Univ Sao Paulo, Inst Phys, Sao Paulo, SP - Brazil
[3] Clemson Univ, Dept Mat Sci & Engn, Clemson, SC - USA
Total Affiliations: 3
Document type: Journal article
Source: Journal of Luminescence; v. 236, AUG 2021.
Web of Science Citations: 0

Continuous wave optically stimulated luminescence (CW-OSL) of an Al2O3:C, Mg single crystal was investigated after irradiation with ultraviolet C radiation (UVC; peak emission at 254 nm) as well as with a beta source under different doses (100 mGy - 3 Gy). Analysis of the OSL decay curves provided experimental evidence that: i) UVC-and beta-irradiated Al2O3:C, Mg single crystal showed similar OSL decay curves, and that ii) a same fast (tau similar to 2.9 s) and a same slow (tau similar to 29 s) components were identified in the OSL decay curves for both types of radiation. On the other hand, analysis of the results suggested that radiation type generated distinct initial concentration of charges trapped at these two traps. The differences in the OSL decay curves were attributed either to differences in the initial population of the traps or to a balance of trapping-detrapping during UV irradiation. (AU)

FAPESP's process: 19/05915-3 - Characterization of minerals for luminescent dosimetry of ionizing radiations
Grantee:Neilo Marcos Trindade
Support type: Regular Research Grants
FAPESP's process: 19/22375-2 - Study of kinetic parameters of thermoluminescent peaks of Al2O3:C,Mg
Grantee:Juan Matheus Munoz
Support type: Scholarships in Brazil - Scientific Initiation
FAPESP's process: 18/05982-0 - R&D&I in radiation metrology in the health area
Grantee:Linda Viola Ehlin Caldas
Support type: Research Projects - Thematic Grants