Cerium-doped lutetium oxyorthosilicate; A fast, efficient new scintillator

Conference · Sat Aug 01 00:00:00 EDT 1992 · IEEE Transactions on Nuclear Science (Institute of Electrical and Electronics Engineers); (United States)

OSTI ID:6947468

Melcher, C L; Schweitzer, J S ^[1]

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1. Schlumberger-Doll Research Center, Ridgefield, CT (United States)

In this paper, the authors have discovered a new single crystal inorganic scintillator, cerium-doped lutetium oxyorthosilicate (Lu[sub 2]) (1 [minus] x)Ce[sub 2x](SiO[sub 4])O or (LSO), which has a number of advantages over existing scintillators. It has a scintillation emission intensity which is [approximately] 75% of NaI(T1) with a decay time of [approximately] 40 ns. The peak emission wavelength is 420 nm. It has a very high gamma-ray detection efficiency due to its density of 7.4 g/cm[sup 3] and its effective atomic number of 66. Its radiation length of 1.14 cm is only slightly longer than BGO (1.12 cm). Due to its unique combination of high emission intensity, speed, and high density and atomic number, LSO appears to be an attractive candidate for diverse applications including medical imaging, high energy physics experiments, and geophysical exploration.

• OSTI ID: 6947468
• Report Number(s): CONF-911106-; CODEN: IETNAE; TRN: 93-006872
• Journal Information: IEEE Transactions on Nuclear Science (Institute of Electrical and Electronics Engineers); (United States), Vol. 39:4; Conference: 1991 Institute of Electrical and Electronic Engineers (IEEE) nuclear science symposium and medical imaging conference, Santa Fe, NM (United States), 2-9 Nov 1991; ISSN 0018-9499
• Country of Publication: United States
• Language: English

Related Subjects

46 INSTRUMENTATION RELATED TO NUCLEAR SCIENCE AND TECHNOLOGY
37 INORGANIC
ORGANIC
PHYSICAL AND ANALYTICAL CHEMISTRY
38 RADIATION CHEMISTRY, RADIOCHEMISTRY, AND NUCLEAR CHEMISTRY
LUTETIUM COMPLEXES
CERIUM ADDITIONS
SCINTILLATION COUNTERS
MATERIALS TESTING
SILICON COMPOUNDS
EMISSION SPECTRA
GAMMA DETECTION
GEOPHYSICAL SURVEYS
HIGH ENERGY PHYSICS
IMAGE PROCESSING
MONOCRYSTALS
NUCLEAR MEDICINE
ALLOYS
CERIUM ALLOYS
COMPLEXES
CRYSTALS
DETECTION
MEASURING INSTRUMENTS
MEDICINE
PHYSICS
PROCESSING
RADIATION DETECTION
RADIATION DETECTORS
RARE EARTH ADDITIONS
RARE EARTH ALLOYS
RARE EARTH COMPLEXES
SPECTRA
SURVEYS
TESTING
440104* - Radiation Instrumentation- High Energy Physics Instrumentation
440103 - Radiation Instrumentation- Nuclear Spectroscopic Instrumentation
400500 - Photochemistry
400702 - Radiochemistry & Nuclear Chemistry- Properties of Radioactive Materials