KIP-Veröffentlichungen

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 lowthermal- gradient Czochralski technique, their optical, luminescent, diamagnetic, thermal and bolometric properties were tested.

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 lowthermal- gradient Czochralski technique, their optical, luminescent, diamagnetic, thermal and bolometric properties were tested.