Scintillation characteristics of GSO single crystal grown under O{sub 2}-containing atmosphere

Journal Article · Tue Aug 01 04:00:00 EDT 1995 · IEEE Transactions on Nuclear Science

DOI:https://doi.org/10.1109/23.467752· OSTI ID:148045

Kurata, Y; Kurashige, K; Ishibashi, H; Susa, K

A Ce doped Gd{sub 2}SiO{sub 5} (GSO) single crystal is an excellent scintillator featuring a large light output, a short decay constant and a high absorption coefficient. The authors have investigated dependence of the scintillation characteristics on the growth atmosphere. GSO crystal is usually grown in pure N{sub 2}, which due to thermal etching during the growth always roughens the boule surface, inducing some micro-cracks on the surface which often triggers the large crack in the boule. To eliminate this, the authors first introduced 1 vol% O{sub 2}-containing N{sub 2} gas for the growth atmosphere. The resultant boule turned be very smooth in surface, but pale yellow in color and degraded in the scintillation characteristics. To retain these properties, the authors then introduced an annealing process and found the annealing under pure N{sub 2} atmosphere quite effective on the recovery both in color and scintillation properties.

• OSTI ID: 148045
• Report Number(s): CONF-941061--
• Journal Information: IEEE Transactions on Nuclear Science, Journal Name: IEEE Transactions on Nuclear Science Journal Issue: 4Pt1 Vol. 42; ISSN 0018-9499; ISSN IETNAE
• Country of Publication: United States
• Language: English

Related Subjects

36 MATERIALS SCIENCE
55 BIOLOGY AND MEDICINE
BASIC STUDIES
CRYSTAL GROWTH
DOPED MATERIALS
GADOLINIUM OXIDES
IMAGE PROCESSING
MATERIALS
MECHANICAL PROPERTIES
SCINTILLATION COUNTERS
SILICON OXIDES