细颗粒核乳胶对γ射线影响下的中子探测  

The Detection for Neutron Beam with γ Rays in the Fine Particle-nuclear Emulsion

作　　者：许蓉 张东海[2] XU Rong;ZHANG Dong-hai(College of Teacher and Education,Shanxi Normal University,Linfen 041000,Shanxi,China;Institute of Modern Physics,Shanxi Normal University,Linfen 041000,Shanxi,China)

机构地区：[1]山西师范大学教师教育学院,山西临汾041000 [2]山西师范大学现代物理研究所,山西临汾041000

出　　处：《山西师范大学学报（自然科学版）》2019年第2期41-44,共4页Journal of Shanxi Normal University(Natural Science Edition)

基　　金：国家自然科学基金资助(11075100;11565001)

摘　　要：为了研究中子束照射时γ射线环境的影响,实验研究人员借鉴国产一般核乳胶的制备方法,在做了一些调整后所制备的细颗粒乳胶,并通过实验测试了三种不同颗粒大小的核乳胶对γ射线的探测灵敏度,发现颗粒越小的乳胶对其灵敏度越低.采用了AgBr晶粒较小的细颗粒乳胶对核燃料残留物样品进行了探测实验,显影处理后经显微镜观测到的径迹图片可清晰分辨出反冲质子的径迹,并且本底灰雾程度较低.这为后续研究有关γ射线环境下的中子束探测提供了适用的核乳胶径迹探测器方面的实验依据.Experimental researchers produced fine particle nuclear emulsion after some adjustment by the preparation method of domestic nuclear emulsion,tested the sensitivity from three different grain size of nuclear emulsion withγrays to research the influence when neutron beam irriadiate the nuclear emulsion,and found the sensitivity more lower with less grain size.In the experiment the nuclear fuel leftover was detected by the 60nm grain size of AgBr crystal in nuclear emulsion.From the nuclear track picture under the microscope after developing they can distinguish the track of recoil proton from the background fog.It underlie the fine nuclear emulsion track detector data for the subsequent research about the neutron beam irradiation withγrays.

关 键 词：潜影 灵敏度 细颗粒核乳胶 颗粒密度 本底灰雾 

分 类 号：O571.2[理学—粒子物理与原子核物理]