Development of fluoride materials for neutron detection

Abstract

We have studied various lithium containing fluoride materials as neutron scintillators for the last 15 years. Fluoride scintillator samples were prepared by melt growth techniques and their scintillation properties were investigated under thermal neutron irradiation. Developed fluoride scintillators show non-hygroscopicities and full-absorption peaks in the pulse height spectra under thermal neutron irradiation. The highest light yield among the samples was approximately 40000 photons/neutron. Several fluoride materials can be used a non-hygroscopic neutron scintillator.

Photoluminescence and Radioluminescence Properties of Y3Al5O12 Doped with 3d-Transition Metal Ions

“…Although many scintillators have been studied in the last few decades, (4)(5)(6)(7) fundamental studies on novel scintillators still continue to achieve better performance than ever before. There have been reports on various types of scintillator, such as single crystals, (8)(9)(10)(11)(12)(13)(14)(15)(16)(17)(18)(19)(20)(21) nanocrystals, (22) crystalline films, (23) ceramics, (24)(25)(26)(27) glasses, (28)(29)(30)(31)(32)(33)(34)(35)(36)(37) plastics, (38) and organic-inorganic hybrid materials, (39)(40)(41)(42) even in the last few years. In terms of the luminescent center, specific dopants such as Ce, Eu, and Tl have been mainly used for commercial scintillators; however, other dopants are also of our interest.…”

Dopant concentration dependence on optical and scintillation properties of Eu-doped Gd3Al2Ga3O12 single crystals

“…9,10) Favorable properties of scintillators for Xand γ-ray detection are a large effective atomic number (Z eff ), a high density, a fast decay time, a high light yield (LY), high energy resolution, and a non-hygroscopicity. Since the ideal scintillator that is excellent in all the properties has still not been developed, properties of novel organic 11) and inorganic 12) scintillators such as crystalline films, 13) single crystals, [14][15][16][17] ceramics, 18,19) and glasses 20) are intensively studied.…”