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Fission and quasifission modes in heavy-ion-induced reactions leading to the formation of Hs*

par Itkis, I.M.;Kozulin, E.M.;Itkis, Mikhail;Knyazheva, G.N.;Bogachev, A.A.;Chernysheva, E.V. E.V.;Krupa, L.;Oganessian, Yu.Ts.;Zagrebaev, Valery;Rusanov, Ya;Goennenwein, F.;Dorvaux, O.;Stuttge, Louise;Hanappe, Francis ;Vardaci, Emanuele;De Goes Brennand, Edna Gusmão E.
Référence Physical review. C. Nuclear physics, 83, 6, 064613
Publication Publié, 2011-06

Article révisé par les pairs

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Résumé :

Mass and energy distributions of binary reaction products obtained in the reactions Ne22+Cf249,Mg26+Cm248, S36+U238, and Fe58+Pb208 have been measured. All reactions lead to Hs isotopes. At energies below the Coulomb barrier the bimodal fission of Hs*, formed in the reaction Mg26+Cm248, is observed. In the reaction S36+U238, leading to the formation of a similar compound nucleus, the main part of the symmetric fragments arises from the quasifission process. At energies above the Coulomb barrier fusion-fission is the main process leading to the formation of symmetric fragments for both reactions with Mg and S ions. In the case of the Fe58+Pb208 reaction the quasifission process dominates at all measured energies. © 2011 American Physical Society.