Work

Research of rare nuclear processes can give important information about nuclear structure and nuclear interaction, properties of weak interaction and neutrino. The main purpose of this work is to study rare nuclear decays in natural isotopes of uranium. The measurements will be performed at the Institute of Nuclear Research of the National Academy of Sciences of Ukraine using uranium samples with different isotope enrichment and semiconductor detectors made of ultrapure germanium. The work includes the following main stages: design and testing of the experimental setup; development of the methods to reduce the radioactive background of the detector; long-term measurements with a uranium sample; collection and analysis of the obtained experimental data. As a result of the work, it is expected to obtain restrictions or values (in the case of the effect) on the partial half-lives of a different low-probability decay channels in 235U and 238U, as well as confirmation of existence of the 2041-keV peak, the study of which is important due to the fact that it can create a background to the energy range of neutrinoless double beta decay 76Ge (decay energy 2039 keV).