First investigation of $^{96}$Zr samples enriched by the gas-centrifuge method for the use in rare-decay studies
D. ArefevElectrochemical Plant , Zelenogorsk , 663690 , RussiaA. S. BarabashNRC Kurchatov Institute , Kurchatov Complex of Fundamental Research , Moscow , 117218 , RussiaM. De JesusUniversité Lyon , Université Lyon 1 , CNRS/IN2P3 , IP2I-Lyon , Villeurbanne , F-69622 , FranceS. EvseevJoint Institute for Nuclear Research , Dubna , 141980 , RussiaD. FilosofovJoint Institute for Nuclear Research , Dubna , 141980 , RussiaN. GorshkovJoint Institute for Nuclear Research , Dubna , 141980 , RussiaV. KazalovJoint Institute for Nuclear Research , Dubna , 141980 , RussiaD. KaraivanovJoint Institute for Nuclear Research , Dubna , 141980 , RussiaT. KhussainovInstitute of Nuclear Physics , Ministry of Energy of the Republic of Kazakhstan , Almaty , 050032 , KazakhstanO. KochetovJoint Institute for Nuclear Research , Dubna , 141980 , RussiaD KushnarevElectrochemical Plant , Zelenogorsk , 663690 , RussiaN. A. MirzayevA. LubashevskiyD. PonomarevA. RakhimovJoint Institute for Nuclear Research , Dubna , 141980 , RussiaS. RozovJoint Institute for Nuclear Research , Dubna , 141980 , RussiaK. ShakhovJoint Institute for Nuclear Research , Dubna , 141980 , RussiaN. TemerbulatovaInstitute of Nuclear Physics , Ministry of Energy of the Republic of Kazakhstan , Almaty , 050032 , KazakhstanD. TimofeevElectrochemical Plant , Zelenogorsk , 663690 , RussiaA. UshakovElectrochemical Plant , Zelenogorsk , 663690 , RussiaS. VasilyevJoint Institute for Nuclear Research , Dubna , 141980 , RussiaE. YakushevJoint Institute for Nuclear Research , Dubna , 141980 , RussiaV. YumatovNRC Kurchatov Institute , Kurchatov Complex of Fundamental Research , Moscow , 117218 , RussiaS. ZyryanovElectrochemical Plant , Zelenogorsk , 663690 , Russia
2026
ABI
Annotatsiya
For the first time, the isotope $^{96}$Zr has been produced by the gas-centrifuge method (enrichment is 88.28% and full mass of $^{96}$Zr is 179.816 g). The level of radionuclide impurities of the samples and thus their suitability for rare-event search have been investigated using three low-background HPGe detectors. The most stringent limit, obtained at sea level, on the half-life of the double beta decay of $^{96}$Zr to the $0^+_1$ excited state (1148 keV) of $^{96}$Mo has been set $T_{1/2}(0ν+2ν)>3.9 \times 10^{19}$ yr (90% C.L.).
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