Large GSO single crystals with a diameter of 100mm 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., Ibaraki, Japan

Volume

51

Issue

3

fYear

2004

fDate

6/1/2004 12:00:00 AM

Firstpage

742

Lastpage

745

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

cerium; crystal growth; doping profiles; gadolinium compounds; positron emission tomography; solid scintillation detectors; 100 mm; Gd₂SiO₅:Ce; cerium-doped Gd₂SiO₅ scintillator; commercial PET; crystal growth; energy resolution; furnace atmosphere; intense light output; large GSO single crystals; optimized growth conditions; positron emission tomography; production capacity; scintillation performance; short decay time; temperature stability; Costs; Crystals; Energy resolution; Furnaces; Insulation; Positron emission tomography; Production; Stability; Temperature measurement; Thermal stresses; Crystal growth; PET; gadolinium compounds; positron emission tomography; scintillation detectors;

fLanguage

English

Journal_Title

Nuclear Science, IEEE Transactions on

Publisher

ieee

ISSN

0018-9499

Type

jour

DOI

10.1109/TNS.2004.829606

Filename

1310591