  The fast neutrons produced by a calibrated 241Am-Be source were detected by
two different Cs2LiYCl6:Ce (CLYC) scintillator detectors. The two cylindrical
crystals (1"x1" in size) were enriched with more than 99% of 7Li (C7LYC) and
with about 95% of 6Li (C6LYC), respectively. Both crystals can detect fast
neutrons whereas only C6LYC can also detect thermal neutrons, due to the
presence of 6Li. The measurement was performed at the L.A.S.A. Laboratory of
INFN and University of Milano (Italy). To identify the neutron events, the
Pulse-Shape-Discrimination technique was used. A value for the detection
efficiency of the 241Am-Be emitted neutrons, with energy up to 10 MeV, was
deduced.
