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Purification of molybdenum oxide, growth and characterization of medium size zinc molybdate crystals for the LUMINEU program

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arxiv 1312.3515 v1 pith:UX7D3SGW submitted 2013-12-12 physics.ins-det nucl-ex

V.N. Shlegel , L. Berge , R.S. Boiko , M. Chapellier , D.M. Chernyak , N. Coron , F.A. Danevich , R. Decourt
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V.Ya. Degoda L. Devoyon A. Drillien L. Dumoulin C. Enss A. Fleischmann L. Gastaldo A. Giuliani M. Gros S. Herve I.M. Ivanov V.V. Kobychev Ya.P. Kogut F. Koskas M. Loidl P. Magnier E.P. Makarov M. Mancuso P. de Marcillac S. Marnieros C. Marrache-Kikuchi S.G. Nasonov X.F. Navick C. Nones E. Olivieri B. Paul Y. Penichot G. Pessina O. Plantevin D.V. Poda T. Redon M. Rodrigues O. Strazzer M. Tenconi L. Torres V.I. Tretyak Ya.V. Vasiliev M. Velazquez O. Viraphong V.N. Zhdankov
This is my paper · ORCID
classification physics.ins-detnucl-ex
keywords crystalsmolybdatezincgrowthmolybdenumradiopuredoublehigh
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The LUMINEU program aims at performing a pilot experiment on neutrinoless double beta decay of 100Mo using radiopure ZnMoO4 crystals operated as scintillating bolometers. Growth of high quality radiopure crystals is a complex task, since there are no commercially available molybdenum compounds with the required levels of purity and radioactive contamination. This paper discusses approaches to purify molybdenum and synthesize compound for high quality radiopure ZnMoO4 crystal growth. A combination of a double sublimation (with addition of zinc molybdate) with subsequent recrystallization in aqueous solutions (using zinc molybdate as a collector) was used. Zinc molybdate crystals up to 1.5 kg were grown by the low-thermal-gradient Czochralski technique, their optical, luminescent, diamagnetic, thermal and bolometric properties were tested.

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