Investigation of Ca 48 -induced reactions with Pu 242 and U 238 targets at the JINR Superheavy Element Factory

Oganessian Y.T. Utyonkov V.K. Ibadullayev D. Abdullin F.S. Dmitriev S.N. Itkis M.G. Karpov A.V. Kovrizhnykh N.D. Kuznetsov D.A. Petrushkin O.V. Podshibiakin A.V. Polyakov A.N. Popeko A.G. Sagaidak R.N. Schlattauer L. Shubin V.D. Shumeiko M.V. Solovyev D.I. Tsyganov Y.S. Voinov A.A. Subbotin V.G. Bodrov A.Y. SabelNikov A.V. Lindner A. Rykaczewski K.P. King T.T. Roberto J.B. Brewer N.T. Grzywacz R.K. Gan Z.G. Zhang Z.Y. Huang M.H. Yang H.B.
August 2022 American Physical Society

Physical Review C
2022 #106 Issue 2

Experiments using a Ca48 beam on U238 and Pu242 targets to produce superheavy nuclei were performed at the gas-filled separator DGFRS-2 online to the new cyclotron DC280 at the SHE Factory at JINR. The decay properties of Fl286 and Fl287, as well as their α-decay products, were refined after the detection of 25 and 69 new decay chains, respectively. In addition, 16 decay chains of Cn283 were observed in the U238+Ca48 reaction. The possibility of existing of isomeric states in the Fl287 consecutive α decays is discussed. A new α line with an energy of 100-200 keV lower than the main one at 10.19 MeV was observed for the first time for even-even Fl286 decay. A maximum cross section of 10.4-2.1+3.5pb was measured for the Pu242(Ca48,3n) Fl287 reaction.

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Joint Institute for Nuclear Research, Dubna, RU-141980, Russian Federation
L.N. Gumilyov Eurasian National University, Nur-Sultan, 010000, Kazakhstan
Palacky University Olomouc, Department of Experimental Physics, Faculty of Science, Olomouc, 771 46, Czech Republic
Oak Ridge National Laboratory, Oak Ridge, 37831, TN, United States
Department of Physics and Astronomy, University of Tennessee, Knoxville, 37996, TN, United States
Institute of Modern Physics, Chinese Academy of Sciences, Lanzhou, 730000, China
Premise Health, Brentwood, 37027, TN, United States

Joint Institute for Nuclear Research
L.N. Gumilyov Eurasian National University
Palacky University Olomouc
Oak Ridge National Laboratory
Department of Physics and Astronomy
Institute of Modern Physics
Premise Health

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