Radioluminescence, low temperature thermoluminescence and scintillation properties of Ca and Eu doped ZnWO4 single crystals. (November 2018)

• Record Type: Journal Article
• Authors: Kowalski, Z.; Kaczmarek, S.M.; Drozdowski, W.; Witkowski, M.E.; Makowski, M.; Brylew, K.; Berkowski, M.; Głowacki, M.
• Is Part Of: Radiation measurements. Volume 118(2018:Nov.)
• Page Start: 1
• Page End: 7
• Publication Date: 2018-11
• Subjects: Nuclear emulsions -- Periodicals; Particle tracks (Nuclear physics) -- Periodicals; Thermoluminescence -- Periodicals; Cosmic rays -- Periodicals; Radiation -- Measurement -- Periodicals; Radiometry -- Periodicals; Radiation Monitoring -- Periodicals; Émulsions nucléaires -- Périodiques; Particules (Physique nucléaire) -- Traces -- Périodiques; Thermoluminescence -- Périodiques; Rayonnement cosmique -- Périodiques; Radiométrie -- Périodiques; 539.77
• DOI: 10.1016/j.radmeas.2018.08.002
• Languages: English
• ISSNs: 1350-4487

Abstract

Abstract: In this work, radioluminescence, low temperature thermoluminescence, and light yield of ZnWO4, ZnWO4 :Ca, and ZnWO4 :Ca, Eu single crystals is reported. It is shown that although the single doping with Ca improves, in a limited scope, the scintillation properties of the studied material, it is not the case with the double doping with Ca and Eu. The values of light yield and energy resolution of the investigated ZnWO4 :Ca, Eu samples are clearly worse compared to either ZnWO4 or ZnWO4 :Ca. The X-ray excited spectra of all the crystals, dominated by the intrinsic luminescence, unveil a strong decrease of intensity from 10 to 350 K; the addition of Eu does not improve this property. Furthermore, the presence of Eu strongly influences the low temperature glow curves, i. a. by introducing a distinct peak close to 150 K. Highlights: ZnWO4, ZnWO4 :Ca and ZnWO4 :Ca, Eu crystals have been grown by the Czochralski method. Pulse height, radio- and thermoluminescence measurements have been performed. Ca-doping hardly improves the scintillation properties, while Eu-doping deteriorates. Low temperature glow curves have been decomposited and trap parameters derived.