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 

机构地区：[1]Radiation Safety Systems Division,Bhabha Atomic Research Centre,Mumbai 400085,India [2]Health Physics Division,Bhabha Atomic Research Centre,Mumbai 400085,India [3]Department of Physics,Nowrosjee Wadia College,Pune,Maharashtra 411001,India

出　　处：《Nuclear Science and Techniques》2021年第5期33-42,共10页核技术（英文）

摘　　要：Plastic scintillation detectors based whole body β/γ contamination monitors are developed for use in radiation facilities.This 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 authority.This system has the features for monitoring hands,feet,head,and faceβ/γusing contamination monitors and portal exit monitors.It 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%,respectively.Theminimumdetectableβ/γcontaminationis0.15 Bqcm^(-2),which is significantly less than the minimum detection objectives on head,face,hands,and feet.

关 键 词：Plastic scintillation detector Contamination monitor MICROCONTROLLER Minimum Detection Objective(MDO) Minimum Detection Concentration(MDC) 

分 类 号：X837[环境科学与工程—环境工程] TL816.2[核科学技术—核技术及应用]