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Information × Registration Number 0220U103027, 0117U001316 , R & D reports Title 3. Study of rare decays, measurements of neutrino fluxes, search for effects beyond the Standard Model of particles popup.stage_title Head Danevych Fedir A, Registration Date 18-07-2020 Organization Institute for Nuclear Research of NAS of Ukraine popup.description2 The half-life of the 100Mo nucleus with respect to 2n2b decay was measured with the highest accuracy, and it was found that the decay occurs mainly due to the ground state of the intermediate nucleus. In the pilot stage of the AMoRE experiment, low-temperature scintillation bolometric detectors (SBD) from CaMoO4 crystals enriched in 100Mo and depleted in 48Ca were used to limit the half-life of the 100Mo nucleus relative to 0n2b-decay of T1/2>9.5x10^22 yr, which is following by the limit on the Majorana mass of neutrino at the level of (1.2-2.1) eV. For the first time, the search for 2b decay of 168Yb, 176Yb, 144Sm and 154Sm was performed in a counting experiment. The spectra of solar neutrinos of the pp-cycle (from the decay of 7Be, pp- and pep-reactions) were measured with high accuracy on the Borexino detector, new restrictions on the neutrino flux from the CNO-cycle and non-standard neutrino interactions were established. A review of experimental studies of rare alpha and beta decays has been published. Cryogenic photodetectors with a low registration threshold (detector noise level ~10 eV) have been developed, which will increase the sensitivity of bolometric experiments in studies of rare nuclear processes. The possibility of using low-temperature SBD with Li2MoO4 crystals (to search for the spin-dependent interaction of dark matter particles with a mass of hundreds of MeV) and CdMoO4 crystals (to search for 2b-decay of Cd and Mo) is shown. The radiopure scintillation crystals ZnWO4 were developed. Conceptual Design Report for the CUPID project has been published. A system of recording Coordinated Universal Time has been developed. Product Description popup.authors popup.nrat_date 2020-10-01 Close