Eurasian Journal of Physics and Functional Materials. 2019; 3: 58-62
Investigation of the spontaneous fission properties of neutron-deficient nobelium isotopes
https://doi.org/10.29317/ejpfm.2019030108Аннотация
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.
Список литературы
1. A.G. Popeko et al., Nucl. Instrum. Methods Phys. Res. B 376 (2016) 140.
2. A.V. Isaev et al., Instrum. Exp. Tech. 54 (2011) 37.
3. A.I. Svirikhin et al., Instrum. Exp. Tech. 54 (2011) 644.
4. J. Magill et al., Nucleonica GmbH (2015).
5. https://github.com/siberianisaev/NeutronGeometry.
6. D.B. Pelowitz et al., Wilcox, MCNPX 2.7.0 Extensions, LA-UR-05- 2675, Los Alamos National Laboratory (2005).
Eurasian Journal of Physics and Functional Materials. 2019; 3: 58-62
Investigation of the spontaneous fission properties of neutron-deficient nobelium isotopes
https://doi.org/10.29317/ejpfm.2019030108Abstract
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.
References
1. A.G. Popeko et al., Nucl. Instrum. Methods Phys. Res. B 376 (2016) 140.
2. A.V. Isaev et al., Instrum. Exp. Tech. 54 (2011) 37.
3. A.I. Svirikhin et al., Instrum. Exp. Tech. 54 (2011) 644.
4. J. Magill et al., Nucleonica GmbH (2015).
5. https://github.com/siberianisaev/NeutronGeometry.
6. D.B. Pelowitz et al., Wilcox, MCNPX 2.7.0 Extensions, LA-UR-05- 2675, Los Alamos National Laboratory (2005).
