Detection of neutrons in a wide energy range with crystalline Gd3Al2Ga3O12, Lu2SiO5 and LaBr3 doped with Ce scintillatorsстатья
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Дата последнего поиска статьи во внешних источниках: 26 июня 2019 г.
Аннотация:High light yield scintillation materials on the base of lanthanide ions were demonstrated to be a multipurpose scintillation materials. They are widely used to detect γ-quanta and now become prospective to detect neutrons as well. Neutrons were detected through several distinct low energy γ-quanta peaks, generated by lanthanide nuclei in the materials under neutrons. Among three crystalline scintillators, namely lutetium oxy-orthosilicate, lanthanum bromide and gadolinium-aluminum-gallium garnet, the Gd3Al2Ga3O12:Ce (GAGG) scintillator showed the best performance and sensitivity due to the low internal background radioactivity and good cross section of neutron capture by natural mixture of the matrix host-creating Gd ions. The material fits the requirements for neutron detector properties - high Gd content and high scintillation light yield, stopping power and reasonable energy resolution for γ-quanta. These findings create prospects to construct compact multipurpose detectors for space and other application.