The Review of Laser Engineering
Online ISSN : 1349-6603
Print ISSN : 0387-0200
ISSN-L : 0387-0200
Laser Review
Survey Meter Using Novel Inorganic Scintillators
Akira YOSHIKAWATakayuki YANAGIDAKentaro FUKUDANoriaki KAWAGUCHIKei KAMADAYutaka FUJIMOTOYuui YOKOTAShunsuke KUROSAWA
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2012 Volume 40 Issue 3 Pages 171-

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Abstract

Single crystal scintillator materials are widely used for detection of high-energy photons and particles. There is continuous demand for new scintillator materials with higher performance because of increasing number of medical, industrial, security and other applications. This article presents the recent development of three novel inorganic scintillators; Pr-doped Lu3Al5O12 (Pr:LuAG), Ce doped Gd3 (Al, Ga)5 O12 (Ce:GAGG) and Ce or Eu-doped 6LiCaAlF6 (Ce:LiCAF, Eu:LiCAF). Pr:LuAG shows very interesting scintillation properties including very fast decay time, high light yield and excellent energy resolution. Taking the advantage of these properties, positron emission mammography (PEM) equipped with Pr:LuAG were developed. Ce:GAGG shows very high light yield, which is much higher than that of Ce:LYSO. Survey meter using Ce:GAGG is developed using this scintillator. Ce:LiCAF and Eu:LiCAF were developed for neutron detection. The advantage and disadvantage are discussed comparing with halide scintillators. Eu-doped LiCAF indicated five times higher light yield than that of existing Li-glass. It is expected to be used as the alternative of 3He.

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© 2012 by The Laser Society of Japan
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