Large GSO single crystals with a diameter of 100 mm and their scintillation performance

Author

Kurashige, K. ; Gunji, A. ; Kamada, M. ; Shimura, N. ; Ishibashi, H. ; Yoshida, K. ; Senguttuvan, N. ; Sumiya, K. ; Shimizu, S. ; Murayama, H.

Author_Institution

R&D Center, Hitachi Chem. Co. Ltd., Tsukuba, Japan

Volume

3

fYear

2003

fDate

19-25 Oct. 2003

Abstract

Cerium-doped Gd₂SiO₅ (GSO) scintillator has good scintillation properties such as high density, intense light output, short decay time, excellent temperature stability and extremely good energy resolution. In order to apply GSO single-crystal scintillators to a commercial PET, we have tried to increase the size of the GSO single-crystal for increasing production capacity and reducing production cost. To grow the large GSO single-crystal, we have optimized growth conditions and atmosphere in the furnace. We have developed growing technology of large GSO single crystals with a diameter of 100 mm. Thousands of specimens with a size of 4 × 6 × 20 mm³ were sampled from each ingot. Uniformity of the light output, energy resolution and decay time in the crystal has been demonstrated for PET application.

Keywords

crystal growth; gamma-ray detection; positron emission tomography; silicon radiation detectors; solid scintillation detectors; 100 mm; 20 mm; 4 mm; 6 mm; cerium-doped Gd₂SiO₅ scintillator; commercial PET; density; energy resolution; intense light output; large GSO single crystals; light output uniformity; optimized growth conditions; production capacity; production cost; scintillation performance; short decay time; temperature stability; Crystalline materials; Crystals; Energy resolution; Furnaces; Insulation; Positron emission tomography; Production; Stability; Temperature; Thermal stresses;

fLanguage

English

Publisher

ieee

Conference_Titel

Nuclear Science Symposium Conference Record, 2003 IEEE

ISSN

1082-3654

Print_ISBN

0-7803-8257-9

Type

conf

DOI

10.1109/NSSMIC.2003.1352249

Filename

1352249