Title :
Scintillation performance of large Ce-doped Gd2SiO5 (GSO) single crystal
Author :
Ishibashi, H. ; Kurashige, K. ; Karata, Y. ; Susa, K. ; Kobayashi, M. ; Tanaka, M. ; Hara, K. ; Ishii, M.
Author_Institution :
Hitachi Chem. Co. Ltd., Ibaraki, Japan
Abstract :
Single crystal Ce-doped Gd2SiO5 (GSO) has a good balance of scintillation properties such as high density intense light output, and short decay time, and also has an excellent temperature response and excellent radiation hardness. We studied causes for cracks in single-crystal GSO which have been a major problem in GSO growth, and tried to optimize the growth conditions by using a two-zone furnace which reduced thermal gradient. We were thus able to grow a crack-free single-crystal of GSO that was 80 mm in diameter and 280 mm long. Specimens with 20×20×200 mm3 sampled from the large GSO boules with 0.5 and 1.5 mol% Ce have been evaluated for high energy physics application
Keywords :
cerium; cracks; crystal growth from melt; gadolinium compounds; scintillation; solid scintillation detectors; Gd2SiO5:Ce; crack-free single-crystal; excellent radiation hardness; excellent temperature response; growth conditions; high density intense light output; large Ce-doped Gd2SiO5 single crystal; scintillation performance; scintillation properties; two-zone furnace; Anisotropic magnetoresistance; Crystalline materials; Furnaces; Gamma ray detectors; Petroleum; Residual stresses; Temperature; Thermal expansion; Thermal stresses; Well logging;
Conference_Titel :
Nuclear Science Symposium, 1997. IEEE
Conference_Location :
Albuquerque, NM
Print_ISBN :
0-7803-4258-5
DOI :
10.1109/NSSMIC.1997.672711
