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Information × Registration Number 0221U106746, 0121U110939 , R & D reports Title Double beta decay of atomic nuclei popup.stage_title Head Danevych Fedir A., д.ф.-м.н. Registration Date 18-12-2021 Organization Institute of Nuclear Research of the National Academy of Sciences of Ukraine popup.description2 New upgraded lower limits for the half-lives of 184Os, 192Os, 190Pt, 198Pt relative to different channels and modes of the decays were set. A possible exact resonant 0νKN transition in 190Pt to the 1,2 1326.9 keV level of 190Os is limited for the first time. A new lower limit on the double-beta decay of 198Pt to the first excited level of 198Hg was set as T1/2 ≥ 3.2 × 1019 yr, one order of magnitude higher than the limit obtained in the previous experiment. A novel technique for the study of pileup events in cryogenic bolometers to search for 0ν2β decay of 100Mo was developed and tested. Characteristics of the experimental setup to search for 2β decay of 106Cd after upgrade were determined. The geometry of the setup to search for β decay of 50V with advanced sensitivity is determined. Background of 116CdWO4 detector was Monte Carlo simulated showing a satisfactory level. The half-life of 212Po is determined with the highest accuracy. The first experimental limit on half-life for double alpha decay is set for 209Bi as T1/2 > 2.9×1020 yr. Product Description popup.authors Zarytskyi Mykola M Kasperovych Dmytro Vasylyovych Klavdienko Volodymyr R Kobychev Vladyslav V Sokur Nazar V Tretyak Volodymyr I popup.nrat_date 2021-12-18 Close