APD;
Ce3+ energy resolution;
gamma-ray detection;
LaCl3;
scintillators;
D O I:
10.1016/S0168-9002(01)02145-3
中图分类号:
TH7 [仪器、仪表];
学科分类号:
0804 ;
080401 ;
081102 ;
摘要:
A high-resolution gamma-ray detector consisting of an 8 mm diameter and 5 mm thick LaCl3(Ce3+) scintillation crystal coupled to a 16 turn diameter APD from Advanced Photonix Inc is presented. The energy resolution R obtained at 662 keV is about 3.7% (full-width at half maximum). The low intrinsic resolution of about 2%, the high light yield of the crystal (46000+/-5000 photons per MeV) and the high quantum efficiency of the avalanche photodiode make this gamma-ray detector an excellent choice for applications were a high energy resolution is required. (C) 2001 Elsevier Science B.V. All rights reserved.