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Crystal growth and Scintillation properties of AGd2Cl7:Ce3+ (A = Cs, K) for gamma and neutron detection

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4 Author(s)
Kan Yang ; Scintillation Mater. Res. Center, Univ. of Tennessee, Knoxville, TN, USA ; Zhuravleva, Mariya ; Rothfuss, H. ; Melcher, C.L.

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.

Published in:

Nuclear Science Symposium Conference Record (NSS/MIC), 2010 IEEE

Date of Conference:

Oct. 30 2010-Nov. 6 2010