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

Cerium-doped Gd/sub 2/SiO/sub 5/ (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 t...

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Bibliographic Details
Published in:IEEE transactions on nuclear science 2004-06, Vol.51 (3), p.742-745
Main Authors: Kurashige, K., Gunji, A., Kamada, M., Shimura, N., Ishibashi, H., Yoshida, K., Senguttuvan, N., Sumiya, K., Shimizu, S., Murayama, H.
Format: Article
Language:English
Subjects:
Costs
Crystals
Energy resolution
Furnaces
Insulation
Positron emission tomography
Production
Stability
Temperature measurement
Thermal stresses
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Summary:Cerium-doped Gd/sub 2/SiO/sub 5/ (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/spl times/6/spl times/20 mm/sup 3/ were sampled from each ingot. Uniformity of the light output, energy resolution and decay time in the crystal has been demonstrated for PET application.
ISSN:0018-9499
1558-1578
DOI:10.1109/TNS.2004.829606