Abstract
The LSO (lutetium oxyorthosilicate, Lu 2SiO 5) scintillation crystal has been shown to improve the efficiency of positron emission tomographs considerably due to its large average atomic number. This makes LSO also interesting for perturbed angular correlation since today's solid state studies require appropriate probes for specific purposes, like 77Br, 187W or 172Lu, with more complex energy spectra. We investigated the applicability of this new scintillator for perturbed angular correlation studies especially in experiments where the improvement of energy resolution as compared to BaF 2 is important without loosing time resolution. From these improvements we expect a larger effective anisotropy. Further, due to the high average atomic number of LSO its photopeak efficiency is considerably higher. We present here test measurements with 172Lu in thulium and a comparison with measurements on a BaF 2 setup.
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