Characteristics of the new YAlO[sub 3]:Ce compared with BGO and GSO

Journal Article · Thu Apr 01 04:00:00 EST 1993 · IEEE Transactions on Nuclear Science (Institute of Electrical and Electronics Engineers); (United States)

DOI:https://doi.org/10.1109/23.212340· OSTI ID:6536716

Ziegler, S I ^[1]; Rogers, J G ^[2]; Selivanov, V; Sinitzin, I ^[3]

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1. Inst. fuer Radiologie und Pathophysiologie, Heidelberg (Germany)
2. TRIUMF, Vancouver, British Columbia (Canada)
3. I.V. Kurchatov Inst., Moscow (Russian Federation)

The characteristics of YAlO[sub 3]:Ce used as a fast scintillation detector with high density (5.35 gm/cm[sup 3]) and high light yield were investigated and compared with other scintillation materials. The decay of the scintillation light could be described by the sum of two exponentials with decay constants of 31 ns and 246 ns, contributing 98% and 2% to the total light yield, respectively. The light yield of 19,700 photons/MeV was measured by comparing the number of photoelectrons produced in YAlO and in BGO under the same conditions. The energy resolution at a gamma ray energy of 511 keV was 6.7% for a 4.0 x 8.0 x 25.0 mm[sup 3] sample. The FWHM of a timing measurement using two YAlO crystals detecting annihilation quanta (with 200 keV threshold) was 1.1 ns. Monte Carlo simulations showed that the crystal depth for the absorption of 90% of 511 keV gamma quanta is 51.8 mm in YAlO (compared with 25.2 mm in BGO).

• OSTI ID: 6536716
• Journal Information: IEEE Transactions on Nuclear Science (Institute of Electrical and Electronics Engineers); (United States), Journal Name: IEEE Transactions on Nuclear Science (Institute of Electrical and Electronics Engineers); (United States) Vol. 40:2; ISSN 0018-9499; ISSN IETNAE
• Country of Publication: United States
• Language: English

Related Subjects

440101* -- Radiation Instrumentation-- General Detectors or Monitors & Radiometric Instruments
46 INSTRUMENTATION RELATED TO NUCLEAR SCIENCE AND TECHNOLOGY
ALUMINIUM COMPOUNDS
ALUMINIUM OXIDES
BGO DETECTORS
CHALCOGENIDES
COMPARATIVE EVALUATIONS
COMPUTERIZED SIMULATION
DETECTION
ENERGY RESOLUTION
EVALUATION
GAMMA DETECTION
MATERIALS
MEASURING INSTRUMENTS
OXIDES
OXYGEN COMPOUNDS
RADIATION DETECTION
RADIATION DETECTORS
RESOLUTION
SCINTILLATION COUNTERS
SIMULATION
SOLID SCINTILLATION DETECTORS
TIME MEASUREMENT
TRANSITION ELEMENT COMPOUNDS
YTTRIUM COMPOUNDS