(KEV) WIDTH AT HALF MAXIMUM @ STANDARD GAIN KOMIGH GAIN t o i Fig. 4 400 600 1200 1600 E (KEV) 2000 2400 2800 3200 Instrument Resolution Versus Gamma Energy Ae 400 Fig. 5 Boo 1200 € 1600 (KEV) 2000 2400 2600 Crystal Interaction Probability, v, Versus Gamma Energy, E. 13