Title :
Crystal growth and Scintillation properties of AGd2Cl7:Ce3+ (A = Cs, K) for gamma and neutron detection
Author :
Yang, Kan ; Zhuravleva, Mariya ; Rothfuss, Harold ; Melcher, Charles L.
Author_Institution :
Scintillation Mater. Res. Center, Univ. of Tennessee, Knoxville, TN, USA
fDate :
Oct. 30 2010-Nov. 6 2010
Abstract :
A new family of Ce-containing scintillator materials is introduced. In this work, we report on the crystal growth of KGd2Cl7:Ce and CsGd2Cl7:Ce via the Vertical Gradient Freeze method. Various Ce concentrations from 0.5 to 10 at% have been tested to study the effect of dopant concentration on scintillation performance. Both KGd2Cl7:Ce and CsGd2Cl7:Ce have demonstrated good properties for gamma ray and thermal neutron detection. Scintillation light yield was ~30,000 ph/MeV for KGd2Cl7: 3% Ce and ~38,000 ph/MeV for CsGd2Cl7: 3% Ce. The crystals exhibited layered structure with cleavage planes.
Keywords :
caesium compounds; crystal growth; doping; gamma-ray detection; neutron detection; potassium compounds; solid scintillation detectors; Ce concentrations; Ce-containing scintillator materials; CsGd2Cl7:Ce; KGd2Cl7:Ce; cleavage planes; crystal growth; dopant concentration; gamma ray detection; scintillation light yield; scintillation performance; scintillation properties; thermal neutron detection; vertical gradient freeze method; Crystals; Energy measurement; Energy resolution; Metals; Neutrons; Photonics;
Conference_Titel :
Nuclear Science Symposium Conference Record (NSS/MIC), 2010 IEEE
Conference_Location :
Knoxville, TN
Print_ISBN :
978-1-4244-9106-3
DOI :
10.1109/NSSMIC.2010.5873978
