SOL-GEL alpha-Al2O3 detectors: TL and OSL response to beta radiation beams

Autor(es)

Polo, Ivon Oramas ^[1] ; Caldas, Linda V. E. ^[1]

Afiliação do(s) autor(es)

^[1] IPEN CNEN, Ave Prof Lineu Prestes 2242, BR-05508000 Sao Paulo, SP - Brazil

• Tipo de documento: Artigo Científico
• Fonte: Radiation Physics and Chemistry; v. 167, FEB 2020.
• Citações Web of Science: 1

Resumo

The dosimetric properties of the SOL-GEL alpha-Al2O3 detectors with several different concentrations of impurities were studied in beta radiation beams. For the characterization of the detectors, the TL and OSL techniques were used. A TL spectrum was acquired. The detectors showed adequate OSL and TL dosimetric characteristics, such as good reproducibility, a glow curve with the peak at similar to 230 degrees C at 5 degrees C/s of heating rate, adequate OSL decay curve, good linearity of response and high phosphor sensitivity. A thermal treatment study was also performed. Moreover, the calibration factors and the lower detection limits were determined for beta radiation. These characteristics indicate the suitability of SOL-GEL alpha-Al2O3 detectors for the establishment of a transfer system or alternative/complementary method for beta radiation dosimetry. (AU)

• Processo FAPESP: 08/57863-2 - P&D em metrologia das radiações
• Beneficiário: Linda Viola Ehlin Caldas
• Modalidade de apoio: Auxílio à Pesquisa - Temático