Sub-Barrier Fusion Enhancement in Neutron-Rich Radioactive ^<132>Sn on ^<64>Ni

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概要

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• Evaporation residue cross sections have been measured using neutron-rich radioactive ^<132>Sn beams incident on a ^<64>Ni target in the vicinity of the Coulomb barrier. This is the first experiment using accelerated ^<132>Sn beams to study nuclear reaction mechanisms. The average beam intensity was 2 x 10^4 particles per second and the smallest cross section measured was less than 5 mb. A large sub-barrier fusion enhancement was observed compared to evaporation residue cross sections for ^<64>Ni on stable even Sn isotopes. The enhancement cannot be accounted for by a simple barrier shift due to the change in nuclear sizes. Coupled-channel calculations including inelastic excitation underpredict the measured cross sections below the barrier. The presence of several neutron transfer channels with large positive Q values suggests that multinucleon transfer may play an important role in enhancing the fusion of ^<132>Sn and ^<64>Ni.

• 理論物理学刊行会の論文
• 2004-07-30

著者

• Galindo-uribarri A.

  Physics Division Oak Ridge National Laboratory

• RUDOLPH D.

  Department of Physics, Lund University

• Rudolph D.

  Department Of Physics Lund University

• Varner R.

  Physics Division Oak Ridge National Laboratory

• LIANG J.

  Physics Division, Oak Ridge National Laboratory

• SHAPIRA D.

  Physics Division, Oak Ridge National Laboratory

• GROSS C.

  Physics Division, Oak Ridge National Laboratory

• BEENE J.

  Physics Division, Oak Ridge National Laboratory

• BIERMAN J.

  Physics Department AD-51, Gonzaga University

• GOMEZ DEL

  Physics Division, Oak Ridge National Laboratory

• HAUSLADEN P.

  Physics Division, Oak Ridge National Laboratory

• LAROCHELLE Y.

  Department of Physics and Astronomy, University of Tennessee

• LOVELAND W.

  Department of Chemistry, Oregon State University

• MUELLER P.

  Physics Division, Oak Ridge National Laboratory

• PETERSON D.

  Department of Chemistry, Oregon State University

• RADFORD D.

  Physics Division, Oak Ridge National Laboratory

• STRACENER D.

  Physics Division, Oak Ridge National Laboratory

• Beene J.

  Physics Division Oak Ridge National Laboratory

• Gross C.

  Physics Division Oak Ridge National Laboratory Oak Ridge

• Gomez Del

  Physics Division Oak Ridge National Laboratory

• Radford D.

  Physics Division Oak Ridge National Laboratory Oak Ridge

• Shapira D.

  Physics Division Oak Ridge National Laboratory

• Bierman J.

  Physics Department Ad-51 Gonzaga University

• Loveland W.

  Department Of Chemistry Oregon State University

• Hausladen P.

  Physics Division Oak Ridge National Laboratory Oak Ridge

• Stracener D.

  Physics Division Oak Ridge National Laboratory

• Larochelle Y.

  Department Of Physics And Astronomy University Of Tennessee

• Peterson D.

  Department Of Chemistry Oregon State University

• Mueller P.

  Physics Division Oak Ridge National Laboratory

• Liang J.

  Physics Division Oak Ridge National Laboratory

関連論文

• High-spin negative-parity states in ^Ca(International Workshop on Nuclear Structure-New Pictures in the Extended Isospin Space(NS07)-)
• Sub-Barrier Fusion Enhancement in Neutron-Rich Radioactive ^Sn on ^Ni
• Superdeformed Structures, Exotic Decays, and Isospin Symmetry in the Mass A〜60 Region(International Workshop on Nuclear Structure-New Pictures in the Extended Isospin Space(NS07)-)
• Angular momentum population for the neutron-deficient lead nuclei produced following the relativistic projectile fragmentation of ^Pb(International Workshop on Nuclear Structure-New Pictures in the Extended Isospin Space(NS07)-)

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