EPJ Web of Conferences
Volume 65, 2014RPSCINT 2013 – International Workshop on Radiopure Scintillators
|Number of page(s)||6|
|Published online||10 January 2014|
Purification of molybdenum oxide, growth and characterization of medium size zinc molybdate crystals for the LUMINEU program
1 Nikolaev Institute of Inorganic Chemistry, 630090 Novosibirsk, Russia
2 Centre de Sciences Nucléaires et de Sciences de la Matière, 91405 Orsay, France
3 Institute for Nuclear Research, MSP 03680 Kyiv, Ukraine
4 IAS, Bâtiment 121, UMR 8617 Université Paris-Sud 11/CNRS, 91405 Orsay, France
5 CNRS, Université de Bordeaux, ICMCB, 87 avenue du Dr. A. Schweitzer, 33608 Pessac cedex, France
6 Kyiv National Taras Shevchenko University, MSP 03680 Kyiv, Ukraine
7 CEA-Saclay, F-91191 Gif sur Yvette, France
8 Institut für Angewandte Physik, Universität Heidelberg, Albert-Ueberle-Strasse 3-5, D-69120 Heidelberg, Germany
9 Dipartimento di Scienza e Alta Tecnologia dell’Università dell’Insubria, I-22100 Como, Italy
10 Dipartimento di Fisica dell’Università di Milano-Bicocca e Sezione di Milano Bicocca dell’INFN, Italy
11 CML Ltd., 630090 Novosibirsk, Russia
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Published online: 10 January 2014
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.
© Owned by the authors, published by EDP Sciences, 2014
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