presents the pulse height spectra of 662 keV c-rays from a 137Cs source as measured with a set of BGO crystal samples,
whereas the photoelectron yield and energy resolution are summarized
in Table 1. The energy resolution of 8.6% obtained for a
5 5 1 mm3 BGO sample is slightly higher than that of 9.0% recently
measured under the same experimental conditions for a
7 7 1 mm3 BGO sample [10