Title :
Purification and growth of PbI2 crystals. Dependence of the radiation response on the PbI2 crystal purity
Author :
Oliveira, I.B. ; Costa, F.E. ; Armelin, M.J. ; Cardoso, L.P. ; Hamada, M.M.
Author_Institution :
Instituto de Pesquisas Energeticas e Nucleares, Cidade Universitaria, Sao Paulo, Brazil
fDate :
6/23/1905 12:00:00 AM
Abstract :
This article describes the methodology for the purification of the PbI2 salt by the technique of multipass zone refining and growth by the Bridgman method. A significant decrease of the impurity concentration was observed as a function of the purification pass number. The results of dark leakage current, the resistivity and response to alpha and gamma radiation were strongly dependent on the purity of the crystal
Keywords :
alpha-particle detection; crystal growth from melt; gamma-ray detection; leakage currents; semiconductor counters; semiconductor materials; Bridgman method; PbI2; PbI2 crystal; alpha particle; dark leakage current; gamma ray; growth; impurity concentration; multipass zone refining; purity; resistivity; Chemicals; Crystalline materials; Crystallization; Crystals; Detectors; Impurities; Lead; Purification; Refining; Temperature;
Conference_Titel :
Nuclear Science Symposium Conference Record, 2001 IEEE
Conference_Location :
San Diego, CA
Print_ISBN :
0-7803-7324-3
DOI :
10.1109/NSSMIC.2001.1009289
