Characteristics of spontaneous fission of 250No

• Published in: Physics of particles and nuclei letters 2017, Vol.14 (4), p.571-575
• Main Authors: Svirikhin, A. I., Andreev, A. V., Yeremin, A. V., Izosimov, I. N., Isaev, A. V., Kuznetsov, A. N., Kuznetsova, A. A., Malyshev, O. N., Popeko, A. G., Popov, Y. A., Sokol, E. A., Chelnokov, M. L., Chepigin, V. I., Schneidman, T. M., Gall, B., Dorvaux, O., Brione, P., Hauschild, K., Lopez-Martenz, A., Rezynkina, K., Mullins, S., Jones, P., Mosat, P.
• Format: Article
• Language: English
• Subjects: Chemical synthesis; Fission; Fragmentation; Fragments; Half-life; Nuclei (nuclear physics); Particle and Nuclear Physics; Physics; Physics and Astronomy; Physics of Elementary Particles and Atomic Nuclei. Experiment
• ISSN: 1547-4771; 1531-8567
• DOI: 10.1134/S1547477117040161

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 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.