Light yield non-proportionality and energy resolution of praseodymium doped LuAG scintillator

L. Swiderski, M. Moszynski, A. Nassalski, A. Syntfeld-Kazuch, T. Szczesniak, K. Kamada, K. Tsutsumi, Y. Usuki, T. Yanagida, A. Yoshikawa

Research output: Contribution to journalArticlepeer-review

48 Citations (Scopus)

Abstract

Scintillation properties of praseodymium doped LuAG have been investigated. The crystal is a dense (6.7 g/cm3 ) scintillator with a short decay time around 20 ns and wavelength emission spectrum peaked at 310 nm. The tested sample was 10 mm × 10 mm × 5 mm cuboid, polished on all surfaces. The dopant concentration amounts to 0.23 mol%. A light yield of 16000 ± 1600 ph/MeV was measured using high sensitivity (13.7 μ A/lmF ) Photonis photomultiplier (PMT) XP5500B. High quantum efficiency of this PMT (35%) allowed us to register 5600 ± 400phe/MeV using 12 μ s shaping time in the spectroscopy amplifier. The measured energy resolution was equal to 5.0 ±0.1 %. Response of LuAG:Pr to γ-rays was found to be proportional over wide energy range. Deviation from proportionality does not exceed 10% at 16.6 keV. This results in good intrinsic energy resolution of LuAG:Pr amounting to 3.0 ± 0.3 %, measured with 662 keV γ-rays from137Cs.

Original languageEnglish
Article number5076032
Pages (from-to)934-938
Number of pages5
JournalIEEE Transactions on Nuclear Science
Volume56
Issue number3
DOIs
Publication statusPublished - 2009 Jun 1

Keywords

  • Energy resolution
  • Light Yield
  • Lutetium Aluminum Garnet
  • Non-proportionality
  • Praseodymium

ASJC Scopus subject areas

  • Nuclear and High Energy Physics
  • Nuclear Energy and Engineering
  • Electrical and Electronic Engineering

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