Detection of multiple neutron events and study on the spontaneous fission of heavy nuclei in experimental synthesis and search for heavy elements in nature

Interest in investigation on spontaneous fission relates to the problem on searching for superheavy elements in nature and study on heavy nuclei fission characteristics. To study the fission characteristics, the system, including γ-quanta and neutron detectors, was supplemented with two surface-barrier silicon detectors to detect fragments. The systems for γ-quanta and neutron detection was started with signals of fragment detectors. The characteristics of spontaneous fission - neutron and γ-quanta average number, mean γ-quanta and mean total energy of γ-quanta at fission for 259Md, 254Cf, 248Cm, and 252Cf, which is standard, are measured