摘要:
[Problem] To provide a neutron detector having a high neutron counting accuracy, whereby neutrons can be accurately measured even in a field with a high dose of ³-rays as background noise, said neutron detector being a neutron scintillator provided with a wavelength converting part comprising a wavelength converting fiber or a wavelength converting sheet for light collection. [Solution] A neutron scintillator formed of a resin-based composite, said resin-based composite comprising a phosphor part (A) formed of a resin composition comprising inorganic phosphor particles containing at least one kind of neutron-capturing isotope that is selected from lithium 6 and boron 10 such as Eu:LiCaAlF 6 and a resin, and at least one wavelength converting part (B) comprising a wavelength converting fiber or a wavelength converting sheet. In the neutron scintillator, it is preferred that the wavelength converting part (B) is enclosed in the phosphor part (A).
摘要:
[Object] To provide a neutron scintillator that is constituted of a resin composition including inorganic fluorescent substance particles and has an excellent neutron/³ ray discrimination ability even when an optical transparency of the resin composition is poor due to a discrepancy of refractive indices and the like and fluorescence due to neutrons cannot be taken out sufficiently. [Solving Means] In a neutron scintillator constituted of a resin composition including a resin and inorganic fluorescent substance particles that include at least one type of neutron capture isotope selected from lithium-6 and boron-10, such as Eu: LiCaAlF6, the resin composition additionally includes a neutron-insensitive fluorescent substance having a different fluorescence property. Neutrons and ³ rays can be discriminated using a difference in the fluorescence property such as a fluorescence lifetime and an emission wavelength between the case where neutrons enter and the case where ³ rays enter.