Advantages and limitations of LSO scintillator in nuclear physics experiments

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

DOI:https://doi.org/10.1109/23.467826· OSTI ID:129143

Ludziejewski, T; Moszynska, K; Moszynski, M; Wolski, D ^[1]; Klamra, W; Norlin, L O ^[2]; Devitsin, E; Kozlov, V ^[3]

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1. Soltan Institute for Nuclear Studies, Swierk-Otwock (Poland)
2. Royal Institute of Technology, Stockholm (Sweden). Dept. of Physics
3. Lebedev Physical Institute, Moscow (Russian Federation)

Light yield, light pulse shape due to {gamma}-rays and {alpha}-particles, energy and time resolutions for three different samples of the LSO scintillator were studied using an XP2020Q photomultiplier and an S3590-03 photodiode. Light yields of 4,200{+-}200 phe/MeV and 18,500{+-}900 e-h pair/MeV were measured for the PM tube and the photodiode, respectively. The light pulse shape exhibits a pure exponential decay with a time constant of 47.2{+-}1.3 ns for both {gamma}-rays and {alpha}-particles. Energy resolutions of 10% and 14.6% for the 662 keV {gamma}-rays from a {sup 137}Cs source were obtained for the photomultiplier and the photodiode readout, respectively. A time resolution of 180 ns was observed for {sup 60}Co {gamma}-rays at 1 MeV threshold and 400 ps for 100 keV threshold. The study confirmed a number of advantages of the LSO scintillator for nuclear physics experiments, however, for small size samples. For larger volumes the natural radioactivity of the LSO, about 300 counts/s/cm{sup 3}, may limit possible applications. The high number of e-h pair produced in the photodiodes makes LSO very attractive for small compact scintillation probes.

• OSTI ID: 129143
• 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

44 INSTRUMENTATION
INCLUDING NUCLEAR AND PARTICLE DETECTORS
ALPHA DETECTION
CERIUM
CESIUM 137
COBALT 60
DOPED MATERIALS
ENERGY RESOLUTION
EXPERIMENTAL DATA
GAMMA DETECTION
INORGANIC PHOSPHORS
LUTETIUM OXIDES
MATERIALS
READOUT SYSTEMS
SCINTILLATOR-PHOTODIODE DETECTORS
SILICON OXIDES