Nucl. Inst. and Met. in Phys. A 611, 280 (2009)
Ban G, Bodek K, Lefort T, Naviliat-Cuncic O, Pierre E, Plonka C, Rogel G
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http://dx.doi.org/10.1016/j.nima.2009.07.083
Abstract
We report the results of test measurements aimed at determining the performance of 6Li-doped glass scintillators for ultra-cold neutron detection. Investigations have mainly focused on the reduction of the gamma-ray sensitivity of the scintillators. The probability of gamma interaction has been considerably lowered using very thin glasses. For signals corresponding to full-energy deposition, a background count rate of 8×10−3 s−1 was obtained for a shielded 0.5 cm3 GS10 scintillator located near the PF2 turbine at ILL. The neutron–gamma separation has further been improved using a stack with an 6Li-depleted scintillator and an 6Li-enriched one. Neutron captures leading to partial energy deposition (so-called “edge events”) have strongly been reduced resulting in a clear separation between the neutron and the gamma contributions.