Effect of tungsten doping on ZnMoO4 scintillating bolometer performance

Dmitry Chernyak (1, 2) , F. A. Danevich (2) , V. Ya Degoda (3) , A. Giuliani (1) , I. M. Ivanov , Ya. P. Kogut , H. Kraus , B. N. Kropivyansky , E. P. Makarov , M. Mancuso , Pierre de Marcillac (1) , V. B. Mikhailik , V. M. Mokina , I. M. Moroz , S. G. Nasonov , O. Plantevin , D. V. Poda , V. N. Shlegel , M. Tenconi , V. I. Tretyak , Matias Velázquez (4) , V. N. Zhdankov

1 CSNSM - Centre de Sciences Nucléaires et de Sciences de la Matière
2 Institute for Nuclear Research of NAS of Ukraine
3 Taras Shevchenko National University of Kyiv
4 ICMCB - Institut de Chimie de la Matière Condensée de Bordeaux

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±5503550±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.

Mots clés: Double beta decay; 100100Mo; Cryogenic scintillating bolometer; ZnMoO4 crystal; Doped scintillator; Scintillation efficiency; Scintillation decay; Luminescence

Domaines: Matériaux

Dmitry Chernyak, F. A. Danevich, V. Ya Degoda, A. Giuliani, I. M. Ivanov, et al.. Effect of tungsten doping on ZnMoO4 scintillating bolometer performance. Optical Materials, 2015, 49, pp.67-74. ⟨10.1016/j.optmat.2015.08.017⟩. ⟨hal-01436642⟩