The introduction of a small quantity of tungsten oxide (in the range 0.2-0.5 wt%) into the melt improves the growth of ZnMoO4 crystals. No significant difference in the kinetics of scintillation decay, scintillation efficiency, emission spectra, optical transmittance was observed for three ZnMoO4 crystal samples grown from the melt of stoichiometric composition, with excess of molybdenum and doped with tungsten. Using CaWO4 as reference, the absolute light yield of ZnMoO4 is found to be equal to 3550±550 ph/MeV at 77 K. For two ZnMoO4 samples 20 mm in diameter and 40 mm in length (grown from the melt of stoichiometric composition and doped with tungsten) it is confirmed that scintillation and bolometric response are similar at milli-Kelvin temperature.

Effect of tungsten doping on ZnMoO4 scintillating bolometer performance

GIULIANI, ANDREA ERNESTO GUIDO;MANCUSO, MICHELE;
2015

Abstract

The introduction of a small quantity of tungsten oxide (in the range 0.2-0.5 wt%) into the melt improves the growth of ZnMoO4 crystals. No significant difference in the kinetics of scintillation decay, scintillation efficiency, emission spectra, optical transmittance was observed for three ZnMoO4 crystal samples grown from the melt of stoichiometric composition, with excess of molybdenum and doped with tungsten. Using CaWO4 as reference, the absolute light yield of ZnMoO4 is found to be equal to 3550±550 ph/MeV at 77 K. For two ZnMoO4 samples 20 mm in diameter and 40 mm in length (grown from the melt of stoichiometric composition and doped with tungsten) it is confirmed that scintillation and bolometric response are similar at milli-Kelvin temperature.
100Mo; Cryogenic scintillating bolometer; Doped scintillator; Double beta decay; Luminescence; Scintillation decay; Scintillation efficiency; ZnMoO4 crystal; Electronic, Optical and Magnetic Materials; Electrical and Electronic Engineering; Atomic and Molecular Physics, and Optics; Computer Science (all)
Chernyak, D. M.; Danevich, F. A.; Degoda, V. Y. a.; Giuliani, ANDREA ERNESTO GUIDO; Ivanov, I. M.; Kogut, Y. a. P.; Kraus, H.; Kropivyansky, B. N.; Makarov, E. P.; Mancuso, Michele; De Marcillac, P.; Mikhailik, V. B.; Mokina, V. M.; Moroz, I. M.; Nasonov, S. G.; Plantevin, O.; Poda, D. V.; Shlegel, V. N.; Tenconi, M.; Tretyak, V. I.; Velazquez, M.; Zhdankov, V. N.
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Utilizza questo identificativo per citare o creare un link a questo documento: http://hdl.handle.net/11383/2050442
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