Journal of Sensor Science and Technology (센서학회지)

The Korean Sensors Society (한국센서학회)
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Crystal Growth and Scintillation Properties of CsI:Gd

CsI:Gd 결정 육성과 섬광 특성

  • Received : 2012.05.23
  • Accepted : 2012.07.03
  • Published : 2012.07.31
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Abstract

CsI:Gd crystal was grown by the Bridgeman method and its scintillation properties were investigated. The wavelength peak of the luminescence spectrum for the crystal excited by X-ray was 419 nm. The range of the spectrum was from 300 nm to 800 nm. The spectrum well matched to the quantum efficiency of a typical bi-alkali photo-multiplier tube(PMT). An energy resolution of 48.2 % was obtained for 662 keV ${\gamma}$-rays of $^{137}Cs$. The three decay times were obtained as a fast(557.4 ns, 42.2 %), intermediate (1.78 ${\mu}s$, 29.7 %) and slow (5.43 ${\mu}s$, 28.1 %) components, respectively.

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