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Электронный каталог: Oganessian, Yu. Ts. - Cross Section and Decay Properties of Nuclei Produced in the *2*4*2Pu(50Ti, 3n)289Lv Reaction
Oganessian, Yu. Ts. - Cross Section and Decay Properties of Nuclei Produced in the *2*4*2Pu(50Ti, 3n)289Lv Reaction
Статья
Автор: Oganessian, Yu. Ts.
Physical Review C: Cross Section and Decay Properties of Nuclei Produced in the *2*4*2Pu(50Ti, 3n)289Lv Reaction
б.г.
ISBN отсутствует
Автор: Oganessian, Yu. Ts.
Physical Review C: Cross Section and Decay Properties of Nuclei Produced in the *2*4*2Pu(50Ti, 3n)289Lv Reaction
б.г.
ISBN отсутствует
На полку
Статья
Oganessian, Yu.Ts.
Cross Section and Decay Properties of Nuclei Produced in the *2*4*2Pu(50Ti, 3n)289Lv Reaction / Yu.Ts.Oganessian, V.K.Utyonkov, D.I.Solovyev, F.Sh.Abdullin, S.N.Dmitriev, D.Ibadullayev, M.G.Itkis, N.D.Kovrizhnykh, D.A.Kuznetsov, O.V.Petrushkin, A.V.Podshibiakin, A.N.Polyakov, A.G.Popeko, R.N.Sagaidak, L.Schlattauer, V.D.Shubin, M.V.Shumeiko, 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, M.M.Zhang, X.Y.Huang, [a.o.]. – Text : electronic // Physical Review C. – 2026. – Vol. 113, No. 1. – P. 014614. – URL: https://doi.org/10.1103/j5r8-9dhx.
The *2*4*2Pu(*5*0Ti,3𝑛)*2*8*9Lv reaction has been studied at the gas-filled separator DGFRS-2 at the SHE Factory at Flerov Laboratory of Nuclear Reactions, Joint Institute for Nuclear Research. The experiment was carried out at the excitation energy of the compound nucleus *2*9*2Lv 𝐸*=36 MeV, 5 MeV lower than in Oganessian et al. [Phys. Rev. C 112, 014603 (2025)], to measure the *2*4*2 Pu + *5*0 Ti reaction excitation function and to determine the decay properties of new Lv isotopes with better accuracy. We have registered one decay chain of *2*8*9 Lv and descendant nuclei with properties that are in agreement with those previously measured in the three decay chains of *2*8*9 Lv . The spontaneous fission of *2*8*1 Cn was observed in this chain for the first time. A decline in 𝐸* led to a drop of the total fusion-evaporation cross section by about an order of magnitude, from 540 &sup(+410)&sub(−250 fb to 54 &sup(+141) &sub(−46) fb. Such a decrease is different from the results of recent calculations of the excitation functions of reactions *2*4*9 Bk , *2*4*9 Cf + *5*0 Ti predicting a maximum cross section for the 3𝑛 channel at 𝐸*≈31–36MeV. From the analysis of theoretical and experimental data, it follows that the maxima of the excitation functions of the reactions of *5*0 Ti with *2*4*9 Bk and 249 Cf will be close to that of the *2*4*2 Pu + *5*0 Ti reaction.
ОИЯИ = ОИЯИ (JINR)2026
Oganessian, Yu.Ts.
Cross Section and Decay Properties of Nuclei Produced in the *2*4*2Pu(50Ti, 3n)289Lv Reaction / Yu.Ts.Oganessian, V.K.Utyonkov, D.I.Solovyev, F.Sh.Abdullin, S.N.Dmitriev, D.Ibadullayev, M.G.Itkis, N.D.Kovrizhnykh, D.A.Kuznetsov, O.V.Petrushkin, A.V.Podshibiakin, A.N.Polyakov, A.G.Popeko, R.N.Sagaidak, L.Schlattauer, V.D.Shubin, M.V.Shumeiko, 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, M.M.Zhang, X.Y.Huang, [a.o.]. – Text : electronic // Physical Review C. – 2026. – Vol. 113, No. 1. – P. 014614. – URL: https://doi.org/10.1103/j5r8-9dhx.
The *2*4*2Pu(*5*0Ti,3𝑛)*2*8*9Lv reaction has been studied at the gas-filled separator DGFRS-2 at the SHE Factory at Flerov Laboratory of Nuclear Reactions, Joint Institute for Nuclear Research. The experiment was carried out at the excitation energy of the compound nucleus *2*9*2Lv 𝐸*=36 MeV, 5 MeV lower than in Oganessian et al. [Phys. Rev. C 112, 014603 (2025)], to measure the *2*4*2 Pu + *5*0 Ti reaction excitation function and to determine the decay properties of new Lv isotopes with better accuracy. We have registered one decay chain of *2*8*9 Lv and descendant nuclei with properties that are in agreement with those previously measured in the three decay chains of *2*8*9 Lv . The spontaneous fission of *2*8*1 Cn was observed in this chain for the first time. A decline in 𝐸* led to a drop of the total fusion-evaporation cross section by about an order of magnitude, from 540 &sup(+410)&sub(−250 fb to 54 &sup(+141) &sub(−46) fb. Such a decrease is different from the results of recent calculations of the excitation functions of reactions *2*4*9 Bk , *2*4*9 Cf + *5*0 Ti predicting a maximum cross section for the 3𝑛 channel at 𝐸*≈31–36MeV. From the analysis of theoretical and experimental data, it follows that the maxima of the excitation functions of the reactions of *5*0 Ti with *2*4*9 Bk and 249 Cf will be close to that of the *2*4*2 Pu + *5*0 Ti reaction.
ОИЯИ = ОИЯИ (JINR)2026
