^(13)C(α, n)^(16)O background in a liquid scintillator based neutrino experiment  

作　　者：赵洁 于泽源 刘江来 李小波 章飞虹 夏冬梅 

机构地区：[1]University of Chinese Academy of Sciences [2]Institute of High Energy Physics, Chinese Academy of Sciences [3]Shanghai Jiaotong University

出　　处：《Chinese Physics C》2014年第11期50-55,共6页中国物理C（英文版）

基　　金：Supported by Ministry of Science and Technology of China(2013CB834301)

摘　　要：α from natural radioactivity may interact with a nucleus and emit a neutron. The reaction introduces the background to the liquid scintillator （LS） based neutrino experiments. In the LS detector,α comes from 23Su, 232Th, and 210Po decay chains. For Gadolinium-doped LS （Gd-LS） detector, α also comes from 227Ac. The nucleus 13C is a natural component of Carbon which is rich in the LS. The background rate and spectrum should be subtracted carefully from the neutrino candidates. This paper describes the calculation of neutron yield and spectrum with uncertainty estimated. The results are relevant for many existing neutrino experiments and future LS or Gd-LS based experiments.α from natural radioactivity may interact with a nucleus and emit a neutron. The reaction introduces the background to the liquid scintillator （LS） based neutrino experiments. In the LS detector,α comes from 23Su, 232Th, and 210Po decay chains. For Gadolinium-doped LS （Gd-LS） detector, α also comes from 227Ac. The nucleus 13C is a natural component of Carbon which is rich in the LS. The background rate and spectrum should be subtracted carefully from the neutrino candidates. This paper describes the calculation of neutron yield and spectrum with uncertainty estimated. The results are relevant for many existing neutrino experiments and future LS or Gd-LS based experiments.

关 键 词：NEUTRINO 13C（α n） 16O RADIOACTIVITY 

分 类 号：O572.321[理学—粒子物理与原子核物理] TL812.2[理学—物理]