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

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

  • 期刊论文

  • 发表日期：

    2026年6月18日

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  • D. Ibadullayev,
  • Yu. Ts. Oganessian,
  • V. K. Utyonkov,
  • F. Sh. Abdullin,
  • S. N. Dmitriev,
  • M. G. Itkis,
  • A. V. Karpov,
  • N. D. Kovrizhnykh,
  • D. A. Kuznetsov,
  • O. V. Petrushkin,
  • A. V. Podshibiakin,
  • A. N. Polyakov,
  • A. G. Popeko,
  • R. N. Sagaidak,
  • V. V. Saiko,
  • L. Schlattauer,
  • V. D. Shubin,
  • M. V. Shumeiko,
  • D. I. Solovyev,
  • Yu. S. Tsyganov,
  • A. A. Voinov,
  • V. G. Subbotin,
  • A. V. Sabelnikov,
  • D. Abdusamadzoda,
  • A. Yu. Bodrov,
  • M. G. Voronyuk,
  • G. A. 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,
  • X. Y. Huang

摘要

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.