Correlation between thermoluminescence and optically stimulated luminescence of alpha-Al2O3:C,Mg

Autor(es)

Trindade, Neilo Marcos ^{[1, 2]} ; Jacobsohn, Luiz Gustavo ^[1] ; Yoshimura, Elisabeth Mateus ^[3]

Afiliação do(s) autor(es)

^[1] Clemson Univ, Dept Mat Sci & Engn, Clemson, SC - USA

^[2] Fed Inst Educ Sci & Technol Sao Paulo, Dept Phys, 625 Pedro Vicente, BR-01109010 Sao Paulo, SP - Brazil

^[3] Univ Sao Paulo, Inst Phys, Sao Paulo, SP - Brazil

• Tipo de documento: Artigo Científico
• Fonte: Journal of Luminescence; v. 206, p. 298-301, FEB 2019.
• Citações Web of Science: 0

Resumo

The optically stimulated luminescence (OSL) and thermoluminescence (TL) signals of an Al2O3:C,Mg single crystal were investigated as a function of the heating temperature and illumination time before readout, respectively. The TL and OSL results were analyzed in complementary ways, including the area under the curve, whole range and partial integration, and peak intensity. A correlation between the continuous decay of the main TL peak intensity (at 185 degrees C at a heating rate of 1 degrees C/s) against blue light (470 nm) illumination times and the decay of the OSL signal for higher temperatures was found. Both these results showed that the emptying of the OSL active trap was closely related to the emptying of the trap related to the main TL peak, indicating a correlation of both phenomena. (AU)

• Processo FAPESP: 17/11663-1 - Estudo de um novo detector natural para aplicações na área de saúde e indústria
• Beneficiário: Neilo Marcos Trindade
• Modalidade de apoio: Bolsas no Exterior - Pesquisa