Radiopure ZnMoO4 scintillating bolometers for the LUMINEU double-beta experiment
The result's identifiers
Result code in IS VaVaI
<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F68407700%3A90027%2F15%3A00344245" target="_blank" >RIV/68407700:90027/15:00344245 - isvavai.cz</a>
Result on the web
<a href="https://doi.org/10.1063/1.4927985" target="_blank" >https://doi.org/10.1063/1.4927985</a>
DOI - Digital Object Identifier
<a href="http://dx.doi.org/10.1063/1.4927985" target="_blank" >10.1063/1.4927985</a>
Alternative languages
Result language
angličtina
Original language name
Radiopure ZnMoO4 scintillating bolometers for the LUMINEU double-beta experiment
Original language description
The results of R&D of radiopure zinc molybdate (ZnMoO4) based scintillating bolometers for the LUMINEU (Luminescent Underground Molybdenum Investigation for NEUtrino mass and nature) double-beta decay experiment are presented. A dedicated two-stage molybdenum purification technique (sublimation in vacuum and recrystallization from aqueous solutions) and an advanced directional solidification method (the low-thermal-gradient Czochralski technique) were utilized to produce high optical quality large mass (similar to 1 kg) ZnMoO4 crystal boules and first Mo-100 (99.5%) enriched (ZnMoO4)-Mo-100 crystal scintillator (mass of similar to 0.2 kg). Scintillating bolometers based on ZnMoO4 (similar to 0.33 kg) and (ZnMoO4)-Mo-100 (similar to 0.06 kg) scintillation elements and high purity Ge wafers were tested in the EDELWEISS set-up at the Modane Underground Laboratory (France). Long term low temperature tests demonstrate excellent detectors' performance and effectiveness of the purification and solidification procedures for the achievement of high radiopurity of the material, in particular with a bulk activity of Th-228 and Ra-226 below 4 mu Bq/kg. The adopted protocol was used to produce for the first time a large volume (ZnMoO4)-Mo-100 crystal scintillator (mass of similar to 1.4 kg, Mo-100 enrichment is 99.5%) to search for neutrinoless double-beta decay of Mo-100 in the framework of the LUMINEU project.
Czech name
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Czech description
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Classification
Type
D - Article in proceedings
CEP classification
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OECD FORD branch
10304 - Nuclear physics
Result continuities
Project
—
Continuities
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Others
Publication year
2015
Confidentiality
S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů
Data specific for result type
Article name in the collection
Low Radioactivity Techniques 2015 (LRT 2015): Proceedings of the 5th International Workshop in Low Radioactivity Techniques
ISBN
978-0-7354-1319-1
ISSN
0094-243X
e-ISSN
—
Number of pages
6
Pages from-to
"040003-1"-"040003-6"
Publisher name
AIP Conference Proceedings
Place of publication
New York
Event location
Seattle, WA
Event date
Mar 18, 2015
Type of event by nationality
WRD - Celosvětová akce
UT code for WoS article
000371688900008