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Scintillation Properties of Eu2+ ions doped LaCl3 Crystal

Eu2+ 이온을 도핑한 LaCl3 결정의 섬광 특성

  • Kim, Sung-Hwan (Department of Radiological Science, Cheongju University)
  • 김성환 (청주대학교 방사선학과)
  • Received : 2011.01.04
  • Accepted : 2011.02.10
  • Published : 2011.02.28

Abstract

In this paper, the scintillation properties of $LaCl_3:Eu^{2+}$ crystal were investigated as new scintillator. This scintillation material was grown by a Czochralski method. $LaCl_3:Eu^{2+}$ was determined to have a hexagonal $P_63$/m space group with cell parameters a = b = $7.48{\AA}$, c = $4.37{\AA}$. Under 335 nm UV excitation, the crystal shows a broad emission band between 370 nm and 640 nm wavelength range, peaking at 430 nm. At room temperature, the crystal exhibits one exponential decay time component. The component of scintillation time profile of the crystal emission decays with a $2.82{\pm}0.72{\mu}s$ time constant. The energy resolution of the crystal was measured to be 8.8% (FWHM) for $^{137}Cs$ 662 keV ${\gamma}$-rays.

Keywords

Czochralski method;Europium;$LaCl_3$;Scintillator

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