核电子学与探测技术
覈電子學與探測技術
핵전자학여탐측기술
NUCLEAR ELECTRONICS & DETECTION TECHNOLOGY
2013年
12期
1502-1506
,共5页
李东明%贾书海%李厚文
李東明%賈書海%李厚文
리동명%가서해%리후문
全身计数器%蒙特卡洛%效率%放射性
全身計數器%矇特卡洛%效率%放射性
전신계수기%몽특잡락%효솔%방사성
whole-body counter%Monte Carlo%efficiency%radiation
为了评估放射性场所工作人员体内放射性剂量,常常使用全身计数器( WBC )探测人体的放射性,其探测效率对测量结果至关重要。研究使用蒙特卡洛方法对秦山三期的WBC的2个大面积NaI (Tl)探测器人体测量效率进行模拟,获得较好结果。研究结果表明,对能量从0.08keV~2MeV范围内误差最大为26.6%,对于身高150~180 cm的人体计数率的最大误差40%。
為瞭評估放射性場所工作人員體內放射性劑量,常常使用全身計數器( WBC )探測人體的放射性,其探測效率對測量結果至關重要。研究使用矇特卡洛方法對秦山三期的WBC的2箇大麵積NaI (Tl)探測器人體測量效率進行模擬,穫得較好結果。研究結果錶明,對能量從0.08keV~2MeV範圍內誤差最大為26.6%,對于身高150~180 cm的人體計數率的最大誤差40%。
위료평고방사성장소공작인원체내방사성제량,상상사용전신계수기( WBC )탐측인체적방사성,기탐측효솔대측량결과지관중요。연구사용몽특잡락방법대진산삼기적WBC적2개대면적NaI (Tl)탐측기인체측량효솔진행모의,획득교호결과。연구결과표명,대능량종0.08keV~2MeV범위내오차최대위26.6%,대우신고150~180 cm적인체계수솔적최대오차40%。
Whole-Body Counting was used to measure radiation dose of body in order to evaluate the internal exposure from inner -radionuclides of worker in radiation field .The efficiency of WBC detector is very impor-tant for measurement .The efficiencies of the two very large NaI (Tl) detectors (7.6 127 40.6 cm) which are used with the whole -body counter were simulated by Monte Carlo technology , good results were obtained .As a result, the relative error is 26.6%for energy from 0.08keV to 2 MeV.The discrepancy of different height a-dult person (150~180 cm) was within 40%.