原子能科学技术
原子能科學技術
원자능과학기술
ATOMIC ENERGY SCIENCE AND TECHNOLOGY
2013年
12期
2331-2335
,共5页
李桃生%周波%颜强%宫存溃%王庆宇
李桃生%週波%顏彊%宮存潰%王慶宇
리도생%주파%안강%궁존궤%왕경우
宇宙射线%中子探测%少道解谱%计数器
宇宙射線%中子探測%少道解譜%計數器
우주사선%중자탐측%소도해보%계수기
cosmic ray%neutron detection%unfolding of a few channels%counter
本文基于多球中子谱仪的设计原理,加工单慢化球多计数器的中子测量探头,搭建多路测量装置,形成了以双球测量方式的少道解谱剂量估算模式,并对陆地宇宙射线的中子辐射场进行测试,得到哈尔滨地区中子所致年剂量约为78μSv/a。与多球中子谱仪的测量结果相比,中子注量率和中子周围剂量当量率的双球测量结果的相对偏差分别小于3%和12%。
本文基于多毬中子譜儀的設計原理,加工單慢化毬多計數器的中子測量探頭,搭建多路測量裝置,形成瞭以雙毬測量方式的少道解譜劑量估算模式,併對陸地宇宙射線的中子輻射場進行測試,得到哈爾濱地區中子所緻年劑量約為78μSv/a。與多毬中子譜儀的測量結果相比,中子註量率和中子週圍劑量噹量率的雙毬測量結果的相對偏差分彆小于3%和12%。
본문기우다구중자보의적설계원리,가공단만화구다계수기적중자측량탐두,탑건다로측량장치,형성료이쌍구측량방식적소도해보제량고산모식,병대륙지우주사선적중자복사장진행측시,득도합이빈지구중자소치년제량약위78μSv/a。여다구중자보의적측량결과상비,중자주량솔화중자주위제량당량솔적쌍구측량결과적상대편차분별소우3%화12%。
Based on the design principle of neutron multi-sphere spectrometer in this paper ,the detector with multi-counter inserted into sphere moderator was machined . The measurement equipment with multi-path of the counter was connected .The dose estimation mode by unfolding of a few channels was adopted under the double-sphere measurement .The neutron field of terrestrial cosmic ray was measured for the double-sphere .The annual dose is about 78μSv/a at Harbin area .Compared with the results of the multi-sphere spectrometer , the relative deviations of neutron fluence rate and neutron ambient dose equivalent rate for double-sphere are less than 3% and 12% ,respectively .