Investigation of the spontaneous fission properties of neutron-deficient nobelium isotopes

Abstract

In the last years we carried out several experiments aimed to investigate properties of short-lived SF isotopes. The neutron-deficient isotopes of nobelium were produced in fusion-evaporation reactions using^206,208Pb targets and an intense⁴⁸Ca-beam. Fusion-evaporation residues were separated by the SHELS separator and implanted into a large-area double-sided (48 × 48) strip silicon detector surrounded by³He-based neutron counters. Half-lives and decay branching ratios for^252,254No isotopes were measured. The average number of neutrons per spontaneous fission of²⁵⁴No determined for the first time.

Recommended Citation

Isaev, A. V.; Svirikhin, A. I.; Andreev, A. V.; Yeremin, A. V.; Izosimov, I. N.; Kuznetsov, A. N.; Kuznetsova, A. A.; Malyshev, O. N.; Popeko, A. G.; Popov, Yu. A.; Sokol, E. A.; Chelnokov, M. L.; Chepigin, V. I.; Schneidman, T. M.; Gall, B.; Dorvaux, O.; Brione, P.; Sellam, A.; Hauschild, K.; Lopez-Martenz, A.; Rezynkina, K.; Mullins, S.; and Mosat, P. (2019) "Investigation of the spontaneous fission properties of neutron-deficient nobelium isotopes," Eurasian Journal of Physics and Functional Materials: Vol. 3: No. 1, Article 8.
DOI: https://doi.org/10.29317/ejpfm.2019030108