Growth and characterization of a Li2Mg2(MoO4)3 scintillating bolometer

F.A. Danevich,V.Ya. Degoda, L.L. Dulger,L. Dumoulin,A. Giuliani,P. de Marcillac,S. Marnieros,C. Nones,V. Novati,E. Olivieri, A.A. Pavlyuk,D.V. Poda, V.A. Trifonov,I.V. Yushina,A.S. Zolotarova

Nuclear Instruments and Methods in Physics Research Section A: Accelerators, Spectrometers, Detectors and Associated Equipment（2018）

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摘要

Lithium magnesium molybdate (Li2Mg2(MoO4)3) crystals were grown by the low-thermal-gradient Czochralski method. Luminescence properties of the material (emission spectra, thermally stimulated luminescence, dependence of intensity on temperature, phosphorescence) have been studied under X-ray excitation in the temperature interval from 8 to 400 K, while at the same being operated as a scintillating bolometer at 20 mK for the first time. We demonstrated that Li2Mg2(MoO4)3 crystals are a potentially promising detector material to search for neutrinoless double beta decay of 100Mo.

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关键词

Double beta decay,100Mo,Cryogenic scintillating bolometer,Li2Mg2(MoO4)3 crystal,Crystal growth,Luminescence

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