Variability - Surface intensity distribution of large-area reference sources

Autor(es)

da Silva Jr, Iremar Alves ; Siqueira, Paulo de T. D. ^[1] ; do Nascimento, Eduardo ^[2] ; Yoriyaz, Helio ^[1] ; Sordi, Gian-Maria A. A. ^[1] ; Potiens, Maria de Penha A. ^[1]

Afiliação do(s) autor(es)

^[1] da Silva Jr, Jr., Iremar Alves, Inst Pesquisas Energet & Nucl, Ave Lineu Prestes, 2242 Cidade Univ, Sao Paulo 05508000, SP - Brazil

^[2] Univ Fed Bahia, Salvador 40170115, BA - Brazil

• Tipo de documento: Artigo Científico
• Fonte: Applied Radiation and Isotopes; v. 160, JUN 2020.
• Citações Web of Science: 0

Resumo

In this paper we present the impact of variability, a surface source parameter, on the efficiency evaluation of surface contamination monitors. This study was based on two source uniformity correction methodologies and data from real surface source distributions. Surface source intensity distribution has been changed by rearranging the cells (portions of the active area of each LARS) while keeping the same source uniformity value. Instrument efficiencies have been calculated for different sets of uniformities and variabilities. This study led to emphasize the importance of variability, a differential source intensity distribution parameter, over the uniformity, an integral source intensity distribution parameter, and reinforced the importance of the source uniformity correction procedure on the course of surface contamination monitor calibration. (AU)

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