Using monoenergetic gamma-ray generated from low energy (p,gamma) reso
nant reactions, the full-energy-peak gamma-ray detecting efficiency of
a phi 76mm x 100mm BGO scintillating detector was measured. The effic
iencies of 7%, 9% and 22% are obtained at gamma energies of 17.65, 17.
23 and 6.13 MeV, respectively.