Path to New Elements: Investigation of Reactions with 50Ti and 54Cr

D.A. Ibadullayev, Yu. Ts. Oganessian, V. K. Utyonkov, F. Sh. Abdullin, S. N. Dmitriev, Mikhail G. Itkis, A.V. Karpov, N. D. Kovrizhnykh, D. A. Kuznetsov, O. V. Petrushkin

26 more authors

A. V. Podshibiakin, A. N. Polyakov, A. G. Popeko, Roman N. Sagaidak, В. В. Сайко, Leo Schlattauer, V. D. Shubin, M. V. Shumeiko, D. I. Solovyev, Yu. S. Tsyganov, A. A. Voinov, Vladimir G. Subbotin, Alexey V. Sabel’nikov, Daler Abdusamadzoda, Alexander Yu. Bodrov, M. G. Voronyuk, Gospodin Apostolov Bozhikov, N. V. Aksenov, A. V. Khalkin, Z. G. Gan, Z.Y. Zhang, M. H. Huang, H. B. Yang, J.G. Wang, M. M. Zhang, XJ Huang

2026

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DOI 10.1134/s1062873826700504
Data confidence 85 high
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Abstract

Abstract The reactions 238U(54Cr,4n)288Lv and 242Pu(50Ti,3-4n)288,289Lv were studied at the Dubna Gas-filled Recoil Separator (DGFRS-2). Three new isotopes were discovered: the α-decaying 288Lv and 289Lv, as well as the spontaneously fissioning 280Cn (observed after the α decay of 284Fl). The cross section of the 4n channel for the reaction 238U + 54Cr turned out to be approximately 15-fold lower than the total cross section of the reaction 242Pu + 50Ti at an excitation energy of 292Lv of 41 MeV. This indicates that the cross sections of reactions with actinides using 50Ti are roughly an order of magnitude greater than those with 54Cr for the synthesis of 119 and 120 elements.