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Comparison of the scintillation properties of LSO: Ce manufactured by different laboratories and of LGSO : Ce
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2000 (English)In: IEEE Transactions on Nuclear Science, ISSN 0018-9499, E-ISSN 1558-1578, Vol. 47, no 4, 1341-1345 p.Article in journal (Refereed) Published
Abstract [en]

We measured photoelectron yield, light output, decay times of the light pulses, cerium concentration, energy resolution and time resolution of LSO:Ce manufactured by different laboratories and LGSO:Ce. The LSO samples show excellent scintillation properties: high light output, close to 30,000 ph/MeV and good energy resolution of 7.3% FWHM for Cs-137 gamma-source full energy peak. Time resolution measured in geometry fulfilling the PET scanners requirements is equal to 450 ps. We also present results fi om the measurements with LGSO:Ce by Hitachi Chemical Co., which is of similar chemical composition to LSO. LGSO, at present stage of development, shows about 20% lower light output than LSO and energy resolution of 12.4% FWHM for 662 keV gamma-rays. LSO crystals used in our studies posses similar in scintillation properties, although we suppose that the details of the productions method are different due to the differences in Ce concentration. LGSO is a new and very promising scintillator due to lower background radiation in comparison to LSO, but it features worse energy resolution and smaller number of photoelectrons.

Place, publisher, year, edition, pages
2000. Vol. 47, no 4, 1341-1345 p.
Keyword [en]
crystals
Identifiers
URN: urn:nbn:se:kth:diva-20061ISI: 000089576200010OAI: oai:DiVA.org:kth-20061DiVA: diva2:338754
Note
QC 20100525Available from: 2010-08-10 Created: 2010-08-10Bibliographically approved

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