New isotope Mc 286 produced in the Am 243 + Ca 48 reaction
Oganessian Y.T. Utyonkov V.K. Kovrizhnykh N.D. Abdullin F.S. Dmitriev S.N. Dzhioev A.A. Ibadullayev D. Itkis M.G. Karpov A.V. Kuznetsov D.A. Petrushkin O.V. Podshibiakin A.V. Polyakov A.N. Popeko A.G. Rogov I.S. 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. Khalkin A.V. 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.
December 2022American Physical Society
Physical Review C
2022#106Issue 6
In this paper, we present results of the second experiment on the synthesis of Mc isotopes in the Am243+Ca48 reaction performed at the gas-filled separator DGFRS-2 of the SHE Factory at JINR. The new isotope Mc286 was synthesized, and its half-life of 20+98-9 ms and α-particle energy of 10.71±0.02 MeV were determined. A Mc286 α-decay chain was recorded down to the spontaneous fission of Db266. The spontaneous fission of Rg279 was observed for the first time in one of four new decay chains of Mc287. The excitation function of the reaction was measured at three Ca48 energies of 242, 250, and 259 MeV; the latter resulted in the first observation of the 5n-evaporation channel with a cross section of 0.5-0.4+1.3 pb. The decay properties of 21 previously known odd-Z isotopes were improved. The potential for an electron-capture decay mode is discussed for Mc288 and Nh284 isotopes. The half-lives of spontaneously fissioning nuclei produced in the Ca48-induced reactions with actinide targets are compared with several theoretical predictions.
Text of the article Перейти на текст статьи
Joint Institute for Nuclear Research, Dubna, RU-141980, Russian Federation
Institute of Nuclear Physics, Almaty, 050032, Kazakhstan
Palacky University Olomouc, Department of Experimental Physics, Faculty of Science, Olomouc, 771 46, Czech Republic
Lomonosov Moscow State University, Department of Chemistry, Radiochemistry Division, Moscow, RU-119991, Russian Federation
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
Joint Institute for Nuclear Research
Institute of Nuclear Physics
Palacky University Olomouc
Lomonosov Moscow State University
Oak Ridge National Laboratory
Department of Physics and Astronomy
Institute of Modern Physics
10 лет помогаем публиковать статьи Международный издатель
Книга Публикация научной статьи Волощук 2026 Book Publication of a scientific article 2026