Characteristics of spontaneous fission of 250No

AI Svirikhin, AV Andreev, AV Yeremin… - Physics of Particles and …, 2017 - Springer
AI Svirikhin, AV Andreev, AV Yeremin, IN Izosimov, AV Isaev, AN Kuznetsov, AA Kuznetsova
Physics of Particles and Nuclei Letters, 2017Springer
This study describes an experiment on investigating the properties of spontaneous fission of
shortlived neutron-deficient nuclei synthesized in the reaction of complete fusion 48 Ca+
204 Pb= 252 No*. The experiment is performed using the SHELS separator and the beam of
multicharged ions at U-400 accelerator (LNR, JINR). Two activities undergoing spontaneous
fission, which can be related to the ground and isomeric states of 250 No nucleus, are
registered. The half-lives, total kinetic energies of fission fragments, and neutron …
Abstract
This study describes an experiment on investigating the properties of spontaneous fission of shortlived neutron-deficient nuclei synthesized in the reaction of complete fusion 48Ca + 204Pb = 252No*. The experiment is performed using the SHELS separator and the beam of multicharged ions at U-400 accelerator (LNR, JINR). Two activities undergoing spontaneous fission, which can be related to the ground and isomeric states of 250No nucleus, are registered. The half-lives, total kinetic energies of fission fragments, and neutron multiplicities are measured for the short-lived nuclei. The average number of neutrons per fission for the activity with t 1/2 = 5.1 ± 0.3 μs is = 4.38 ± 0.13 μs, and for nuclei with the half-life t 1/2 = 36 ± 3 μs it is xxxxx.
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