2018/02/01 by A. A. Voinov, Yu. Ts. Oganessian, F. Sh. Abdullin +19 · 1 citation
Physics and Astronomy · #Nuclear physics research studies #Astronomical and nuclear sciences #Nuclear Physics and Applications
paper · pdf · doi:10.1088/1742-6596/966/1/012057
openalex publication_date 2018/02/01 · openalex created_date 2018/03/29 · openalex updated_date 2026/08/04
Experiment aiming at the synthesis of heavy isotopes of Z=118 (Og) using beam of 48 Ca and a target of 249-251 Cf was undertaken in October 2015 – April 2016 employing the Dubna Gas-Filled Recoil Separator (FLNR JINR). The target of mixed isotopes of 249-251 Cf (50.7% of 249 Cf, 12.9% of 250 Cf, and 36.4% of 251 Cf) was irradiated by 48 Ca ions at two beam energies of 252 and 258 MeV with the corresponding accumulated beam doses of 1.6 × 10 19 and 1.1 × 10 19 . A single event observed at lower beam energy was assigned to the isotope 294 Og, the product of the reaction 249 Cf( 48 Ca, 3n); its decay pattern and the observed radioactive properties of the nuclides in the decay chain reproduce in full those observed for 294 Og in our earlier experiments of 2002-2005 and 2012. At higher beam energy we observed no decay chains that could be attributed to the isotopes of Og. The possibility of renewal of this experiment in the future is discussed.