SCINTILLATOR FOR NEUTRON DETECTION AND NEUTRON DETECTOR

摘要

[Abstract] To provide a scintillator for neutron detection which has high sensitivity to neutron rays, and is reduced in a background noise attributed to ³ rays. [Means to Solve the Problems] A scintillator for neutron detection, comprising a metal fluoride crystal containing, as constituent elements, a metal having a valence of 2 or higher, such as calcium, aluminum or yttrium; lithium; and fluorine, the metal fluoride crystal containing 1.1 to 20 atoms per unit volume (atoms/nm 3 ) of 6 Li, having an effective atomic number of 10 to 40, containing a lanthanoid such as cerium, praseodymium or europium, and being represented by LiCaAlF 6 , LiSrAlF 6 , LiYF 4 , etc.