利用测热技术测量核反应堆中子通量密度  

Measurement of Neutron Flux Density in Reactor with Thermal Analysis Method

作　　者：杨铜锁[1] 史永谦[2] 朱庆福[2] 杨维平[3] 张建祥[1] 王藩[2] 王团部[1] 鲁瑾[2] 李来冬 

机构地区：[1]西京学院应用统计与理学系,陕西西安710123 [2]中国原子能科学研究院反应堆工程研究设计所,北京102413 [3]陕西师范大学民族教育学院,陕西西安710062

出　　处：《原子能科学技术》2016年第9期1629-1633,共5页Atomic Energy Science and Technology

基　　金：国家自然科学基金资助项目(11175267)

摘　　要：一种新型中子探测器被研究,其原理是利用带电离子在矿物中沉积的能量退火时会以热量的方式释放出来,通过测量释放的热量而确定中子通量密度。对新型中子探测器进行刻度,在反应堆内某位置测量的热中子通量密度为5.108×1011 cm^(-2)·s^(-1),与标定的热中子通量密度(5.000×1011 cm^(-2)·s^(-1))在2%内符合,说明该探测器可测量中子通量密度。本文方法制作的探测器体积小,可制作成不同形状,便于反应堆不同环境下的中子通量密度测量。选取相应中子能量反应截面较大的元素,该探测器还可测量不同中子能量的通量密度。One new neutron flux density detector was studied.Its principle was to measure annealing heat from mineral depositional energy to make sure neutron flux density.The new neutron detector was calibrated,the measuring neutron flux density of certain location in reactor was 5.108×1011 cm^（-2）·s^（-1）,and the measuring value and calibrated neutron flux density（5.000×1011 cm^（-2）·s^（-1））were coincidence in the 2%.The results show that the new neutron detector can use to measure neutron flux density.This neutron detector has the advantages of small volume possession in nuclear reactor with required shape,and simplified multi-point measurement.The detector can measure different energy neutron flux densities if select element is sensitive for correspondingenergy neutron.

关 键 词：中子探测器 退火热量 热中子通量密度 

分 类 号：O571.53[理学—粒子物理与原子核物理]