Abstract
A glass-ceramic thermal neutron imaging plate material is reported. The material consists of a neutron sensitive 2B2O3–Li2O glass matrix containing nanocrystallites of the storage phosphor BaCl2:Eu2+. When doped with 0.5mol% Eu2+, the neutron induced photostimulated luminescence (PSL) conversion efficiency of the B10 enriched glass-ceramic is around 60% of that a commercial neutron imaging plate, while the γ sensitivity is an order of magnitude lower than that of the commercial plate. A Eu2+-concentration series shows that the PSL efficiency for x rays is optimized at 0.01mol% Eu2+. Thermoluminescence measurements indicate trap depths in BaCl2:Eu2+ ranging from 0.55to2.7eV.
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