Title :
Cerium-doped lutetium oxyorthosilicate: a fast, efficient new scintillator
Author :
Melcher, C.L. ; Schweitzer, J.S.
Author_Institution :
Schlumberger-Doll Res., Ridgefield, CT, USA
fDate :
8/1/1992 12:00:00 AM
Abstract :
The authors discuss a single-crystal inorganic scintillator, cerium-doped lutetium oxyorthosilicate (Lu2(1-x)Ce2x (SiO4) or LSO). It has a scintillation emission intensity which is ~75% of NaI(Tl) with a decay time of ~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/cm3 and its effective atomic number of 66. Its radiation length of 1.14 cm is only slightly longer than bismuth germanate (BGO). The scintillation properties of Ce-doped LSO are compared to NaI(Tl), BGO, and cerium-doped gadolinium oxyorthosilicate (GSO). In addition to desirable physical properties such as high density and high atomic number, LSO also processes a combination of high emission intensity and fast decay which together are superior to any other known single crystal scintillator
Keywords :
cerium compounds; lutetium compounds; scintillation counters; BGO; Ce-doped LSO; GSO; LSO; Lu2(1-x)Ce2x(SiO4); NaI(Tl); effective atomic number; fast decay; gamma-ray detection efficiency; high emission intensity; peak emission wavelength; radiation length; scintillation emission intensity; single-crystal inorganic scintillator; Atomic measurements; Biomedical imaging; Computed tomography; Crystalline materials; Gamma ray detection; Gamma ray detectors; Nuclear physics; Optical refraction; Radiation detectors; Solid scintillation detectors;
Journal_Title :
Nuclear Science, IEEE Transactions on
