Comparative studies of Lu 3 Al 5 O 12 :Ce and Y 3 Al 5 O 12 :Ce scintillators for gamma‐ray detection | Zendy

Chewpraditkul W. | Zendy; Swiderski L. | Zendy; Moszynski M. | Zendy; Szczesniak T. | Zendy; SyntfeldKazuch A. | Zendy; Wanarak C. | Zendy; Limsuwan P. | Zendy

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Comparative studies of Lu 3 Al 5 O 12 :Ce and Y 3 Al 5 O 12 :Ce scintillators for gamma‐ray detection

Author(s) -

Chewpraditkul W.,

Swiderski L.,

Moszynski M.,

Szczesniak T.,

SyntfeldKazuch A.,

Wanarak C.,

Limsuwan P.

Publication year - 2009

Publication title -

physica status solidi (a)

Language(s) - English

Resource type - Journals

SCImago Journal Rank - 0.532

H-Index - 104

eISSN - 1862-6319

pISSN - 1862-6300

DOI - 10.1002/pssa.200925161

Subject(s) - scintillator , scintillation , photoelectric effect , photomultiplier , crystal (programming language) , materials science , optics , physics , analytical chemistry (journal) , lyso , phosphor , coincidence , detector , optoelectronics , chemistry , chromatography , computer science , programming language , medicine , alternative medicine , pathology

The performance of Lu 3 Al 5 O 12 :Ce (LuAG:Ce) and Y 3 Al 5 O 12 :Ce (YAG:Ce) scintillators were compared under γ‐ray excitation using photomultiplier tube (PMT) readout. Light yield non‐proportionality and energy resolution were measured with a Photonis XP5500B PMT. The energy resolution, obtained in this work for 662 keV γ‐rays, was 6.7 and 7.0%, respectively, for LuAG:Ce and YAG:Ce detectors. A fast component in the scintillation decay of LuAG:Ce crystal is faster than that of YAG:Ce crystal, whereas the relative intensity of a fast component for YAG:Ce crystal is higher than that of LuAG:Ce crystal. The coincidence time resolution, obtained in this work for 511 keV annihilation quanta, was 583 and 660 ps, respectively, for LuAG:Ce‐ and YAG:Ce‐based detectors in coincidence experiment together with a BaF 2 scintillation detector. Normalized coincidence time resolution was also discussed in terms of a number of photoelectrons and decay time of the light pulse.

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