摘要
地球中微子是帮助人类认识地球内部结构和成分的一种可行手段。由于目前液闪探测器的体积太小,无法区分地幔的模型。江门地下中微子实验(JUNO)的液闪达到了20 kt,具有很强的观测优势。本研究基于LITHO1.0地球模型预测出JUNO的地球中微子事例率是(34.50±4.78)TNU。同时,研究结果显示地壳的放射性元素丰度误差对全球地壳中微子信号的影响显著大于地壳密度、地壳厚度误差所带来的影响。
The geo-neutrinos detection is a practical way to study the structure and the composition of the interior Earth. The volume of the liquid scintillation detector is usually too small to distinguish the model of the mantles, while the volume of the liquid scintillation detector of Jiangmen Underground Neutrino Observatory（JUNO） can reach as high as 20 000 tons. Thus the geo-neutrinos signals from the JUNO are analyzed to obtain an estimation of（34.50±4.78）TNU with the LITHO1.0 model. It is shown that the influence of the radioactive element abundance uncertainty in the crust on the global crustal neutrino signal is significantly greater than that of the uncertainty of the crustal density and the crustal thickness.
作者
何锦成
韩然
欧阳晓平
HE Jincheng;HAN Ran;OUYANG Xiaoping(College of Nuclear Sciences and Engineering, North China Electric Power University, Beijing 102206, China;Beijing Institute of Spacecraft Environment Engineering, Beijing 100094, China;Northwest China Institute of Nuclear Technology, Xi’an 710024, China)
出处
《航天器环境工程》
2018年第2期158-164,共7页
Spacecraft Environment Engineering
基金
国家自然科学基金项目"基于GRPC新型高颗粒度强子量能器读出系统的研究"(编号:11405056)
关键词
地球中微子
地球模型
液闪
放射性元素丰度
地壳密度
地壳厚度
geo-neutrinos
earth model
liquid scintillation
radioactive elements abundance
crustal density
crustal thickness
