Development of a mechanically resistant fluorite-based pellet to be used in personal dosimetry

Autor(es)

Umisedo, Nancy K. ^[1] ; Okuno, Emico ^[1] ; Cancio, Francisco ^[1] ; Yoshimura, Elisabeth M. ^[1] ; Kunzel, Roseli ^[2]

Afiliação do(s) autor(es)

^[1] Univ Sao Paulo, Inst Fis, Rua Matao 1371, BR-05508090 Sao Paulo, SP - Brazil

^[2] Univ Fed Sao Paulo, Dept Fis, R Sao Nicolau 210, BR-09913030 Diadema, SP - Brazil

• Tipo de documento: Artigo Científico
• Fonte: Radiation Measurements; v. 134, JUN 2020.
• Citações Web of Science: 0

Resumo

The Laboratory of Dosimetry of the University of Sao Paulo performs the external individual monitoring of workers exposed to X and gamma rays applying thermoluminescence (TL) technique. Two types of detectors are used in this service: TLD-100 (LiF:Mg,Ti) and pellets made with natural green fluorite cold pressed with sodium chloride as agglutinant (CaF2:NaCl). Due to the mechanical fragility of the CaF2:NaCl pellet, a new detector has been developed using a commercial adhesive as a binding agent aiming to increase the mechanical resistance. TL properties of the new designed pellet were investigated aiming the use in personal dosimetry and the substitution of the currently in use detectors. Optically stimulated luminescence (OSL) measurements were also performed in order to find its potential use as an OSL dosimeter. (AU)

• Processo FAPESP: 18/05982-0 - P&D&I em metrologia das radiações na área da saúde
• Beneficiário: Linda Viola Ehlin Caldas
• Linha de fomento: Auxílio à Pesquisa - Temático