Investigation of the spontaneous fission properties of neutron-deficient nobelium isotopes
oleh: A. V. Isaev, A. I. Svirikhin, A. V. Andreev, A. V. Yeremin, I. N. Izosimov, A. N. Kuznetsov, A. A. Kuznetsova, O. N. Malyshev, A. G. Popeko, Yu. A. Popov, E. A. Sokol, M. L. Chelnokov, V. I. Chepigin, T. M. Schneidman, B. .. Gall, O. .. Dorvaux, P. .. Brione, A. .. Sellam, K. .. Hauschild, A. .. Lopez-Martenz, K. .. Rezynkina, S. .. Mullins, P. .. Mosat
| Format: | Article |
|---|---|
| Diterbitkan: | L.N. Gumilyov Eurasian National University 2021-11-01 |
Deskripsi
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 using206,208Pb 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 for252,254No isotopes were measured. The average number of neutrons per spontaneous fission of254No determined for the first time.