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      Strong Orientation Dependence of Multinucleon Transfer Processes in \(^{238}\)U+\(^{124}\)Sn Reaction

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          Abstract

          We theoretically investigate multinucleon transfer (MNT) processes in \(^{238}\)U+\(^{124}\)Sn reaction at \(E_\mathrm{lab}=5.7\) MeV/\(A\) using the time-dependent Hartree-Fock (TDHF) theory. For this reaction, measurements of MNT processes have been reported, showing substantial MNT cross sections accompanying more than ten protons. From the calculation, we find that the amount of transferred nucleons depends much on the relative orientation between the deformation axis of \(^{238}\)U and the relative vector connecting centers of \(^{238}\)U and \(^{124}\)Sn nuclei. We find a formation of thick neck when the \(^{238}\)U collides from its tip with \(^{124}\)Sn. However, the neck formation is substantially suppressed when \(^{238}\)U collides from its side. We have found that a large number of protons are transferred in the tip collision. This is caused by the breaking of the neck and subsequent absorption of nucleons in the neck region. We thus conclude that the measured MNT processes involving about ten protons originate from the neck breaking dynamics in the tip collisions of a deformed \(^{238}\)U nucleus.

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          Journal
          1409.8612

          Nuclear physics
          Nuclear physics

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