Design and development of a plastic scintillator based whole body β/γ contamination monitoring system

作     者：Vaishali M.Thakur Amit Jain P.Ashokkumar Rekha Anilkumar Pravin Sawant Probal Chaudhury L.M.Chaudhari Vaishali M.Thakur;Amit Jain;P.Ashokkumar;Rekha Anilkumar;Pravin Sawant;Probal Chaudhury;L.M.Chaudhari

作者机构：Radiation Safety Systems DivisionBhabha Atomic Research CentreMumbai 400085India Health Physics DivisionBhabha Atomic Research CentreMumbai 400085India Department of PhysicsNowrosjee Wadia CollegePuneMaharashtra 411001India 

出 版 物：《Nuclear Science and Techniques》 (核技术（英文）)

年 卷 期：2021年第32卷第5期

页      面：33-42页

核心收录：

学科分类：082803[工学-农业生物环境与能源工程] 082704[工学-辐射防护及环境保护] 08[工学] 0828[工学-农业工程] 0804[工学-仪器科学与技术] 0827[工学-核科学与技术] 

基　　金：HS&E Group Shri Suresh Babu Bhabha Atomic Research Centre, BARC 

主　　题：Plastic scintillation detector Contamination monitor Microcontroller Minimum Detection Objective(MDO) Minimum Detection Concentration(MDC) 

摘      要：Plastic scintillation detectors based whole body β/γ contamination monitors are developed for use in radiation *** microcontroller-based multi-detector system uses 13 plastic scintillator detectors,with minimized dead detection zones,monitoring the whole body,and conforming to the contamination limit prescribed by the regulatory *** system has the features for monitoring hands,feet,head,and faceβ/γusing contamination monitors and portal exit *** can detect gamma sources at a dose rate of 10 n Gyh^(-1).The system is calibrated using b sources^(90)Sr/^(90)Y,^(204)Tl,and^(36)Cl,and the efficiency is found to be 29%,22%,and 18%,***β/γcontaminationis0.15 Bqcm^(-2),which is significantly less than the minimum detection objectives on head,face,hands,and feet.