Neutron scintillator

摘要

To provide a neutron scintillator, which does not contain a heavy element, which is absolutely necessary in realizing a scintillation detector having low sensitivity to gamma ray and fully capable of counting high intensity neutron, Cu is doped in oxide comprised of Li and B. The oxide comprised of Li and B is a transparent single crystal having composition ratio of Li2B4O7. The neutron scintillator contains Cu by 0.001 to 0.1 wt %. Furthermore, a (001) plane cut off perpendicularly to a growth axis and polished from the single crystal whose orientation has been grown in a <001> axis is made to be a scintillator plate crystal.