Li2100deplMoO4 Scintillating Bolometers for Rare-Event Search Experiments

Bandac, Iulian C. ; Barabash, Alexander S. ; Bergé, Laurent ; Borovlev, Yury A. ; Calvo-Mozota, José Maria ; Carniti, Paolo ; Chapellier, Maurice ; Dafinei, Ioan ; Danevich, Fedor A. ; Dumoulin, Louis ; Ferri, Federico ; Giuliani, Andrea ; Gotti, Claudio ; Gras, Philippe ; Grigorieva, Veronika D. ; Ianni, Aldo ; Khalife, Hawraa ; Kobychev, Vladislav V. ; Konovalov, Sergey I. ; Loaiza, Pia ; Madhukuttan, Madhujith ; Makarov, Evgeny P. ; de Marcillac, Pierre ; Marnieros, Stefanos ; Marrache-Kikuchi, Claire A. ; Martinez, Maria (Universidad de Zaragoza) ; Nones, Claudia ; Olivieri, Emiliano ; Ortiz de Solórzano, Alfonso (Universidad de Zaragoza) ; Pessina, Gianluigi ; Poda, Denys V. ; Redon, Thierry ; Scarpaci, Jean-Antoine ; Shlegel, Vladimir N. ; Tretyak, Volodymyr I. ; Umatov, Vladimir I. ; Zarytskyy, Mykola M. ; Zolotarova, Anastasiia

Resumen: We report on the development of scintillating bolometers based on lithium molybdate crystals that contain molybdenum that has depleted into the double-β active isotope 100Mo (Li2100deplMoO4). We used two Li2100deplMoO4 cubic samples, each of which consisted of 45-millimeter sides and had a mass of 0.28 kg; these samples were produced following the purification and crystallization protocols developed for double-β search experiments with 100Mo-enriched Li2MoO4 crystals. Bolometric Ge detectors were utilized to register the scintillation photons that were emitted by the Li2100deplMoO4 crystal scintillators. The measurements were performed in the CROSS cryogenic set-up at the Canfranc Underground Laboratory (Spain). We observed that the Li2100deplMoO4 scintillating bolometers were characterized by an excellent spectrometric performance (∼3–6 keV of FWHM at 0.24–2.6 MeV γs), moderate scintillation signal (∼0.3–0.6 keV/MeV scintillation-to-heat energy ratio, depending on the light collection conditions), and high radiopurity (228Th and 226Ra activities are below a few µBq/kg), which is comparable with the best reported results of low-temperature detectors that are based on Li2MoO4 using natural or 100Mo-enriched molybdenum content. The prospects of Li2100deplMoO4 bolometers for use in rare-event search experiments are briefly discussed.

Idioma: Inglés

DOI: 10.3390/s23125465

Año: 2023

Publicado en: Sensors 23, 12 (2023), 5465 [16 pp.]
ISSN: 1424-8220

Factor impacto SCIMAGO: 0.786 - Instrumentation (Q1) - Analytical Chemistry (Q1) - Atomic and Molecular Physics, and Optics (Q1) - Information Systems (Q2) - Medicine (miscellaneous) (Q2) - Biochemistry (Q2) - Electrical and Electronic Engineering (Q2)

Financiación: info:eu-repo/grantAgreement/EC/H2020/742345/EU/Cryogenic Rare-event Observatory with Surface Sensitivity/CROSS

Tipo y forma: Article (Published version)

Área (Departamento): Área Técnica. Lab. y Talleres (Dpto. Física Teórica)
Área (Departamento): Área Física Atóm.Molec.y Nucl. (Dpto. Física Teórica)