Investigates nuclear reactions for synthesizing new isotopes using 50Ti and 54Cr, indicating significant differences in cross sections.
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.
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Ibadullayev et al. (2026) studied this question.
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