Preparation and characterisation of radiation hard PbWO4 crystal scintillator

The solidification behavior in the Na2WO4–Y2(WO4)3 pseudo-binary system has been investigated to find out the composition of a starting material to grow single crystals of NaY(WO4)2 using the Czochralski technique. It is demonstrated that a starting charge rich in Y2(WO4)3 restricts the formation of impurity phases and may be useful in growing single crystals of a stoichiometric composition. Crystal growth experiments were carried out on undoped and Nd-doped NaY(WO4)2 employing the starting charges with 53 mol% of Y2(WO4)3. The x-ray diffraction data of as-grown crystals were refined using the GSAS program based on the Rietveld refinement. The effective segregation coefficients of the elements measured by the x-ray fluorescence technique revealed the stoichiometric composition of the as-grown Nd:NaY(WO4)2 crystals. The presence of elements in the grown crystals and their valance state were studied using x-ray photoelectron spectroscopy.

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Scintillation Properties of Eu²⁺ions doped LaCl₃Crystal

Kim¹

2011

Journal of the Korea Academia-Industrial cooperation Society

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In this paper, the scintillation properties of LaCl3:Eu 2+ crystal were investigated as new scintillator. This scintillation material was grown by a Czochralski method. LaCl3:Eu 2+ was determined to have a hexagonal P63/m space group with cell parameters a = b = 7.48 Å, c = 4.37 Å. 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 ± 0.72 ㎲ time constant. The energy resolution of the crystal was measured to be 8.8% (FWHM) for 137 Cs 662 keV γ-rays.

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Preparation and characterisation of radiation hard PbWO4 crystal scintillator

Cited by 3 publications

References 9 publications

Vanadate and tungstate based phosphors for thermo luminescence dosimetry

Vanadate and tungstate based phosphors for thermo luminescence dosimetry

Growth of Nd-doped NaY(WO₄)₂single crystals from nonstoichiometric melts

Scintillation Properties of Eu²⁺ions doped LaCl₃Crystal

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Preparation and characterisation of radiation hard PbWO4 crystal scintillator

Cited by 3 publications

References 9 publications

Vanadate and tungstate based phosphors for thermo luminescence dosimetry

Vanadate and tungstate based phosphors for thermo luminescence dosimetry

Growth of Nd-doped NaY(WO4)2single crystals from nonstoichiometric melts

Scintillation Properties of Eu2+ions doped LaCl3Crystal

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Product

Resources

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Growth of Nd-doped NaY(WO₄)₂single crystals from nonstoichiometric melts

Scintillation Properties of Eu²⁺ions doped LaCl₃Crystal