Nuclear Dynamics

1
Nuclear Dynamics
Benoît AVEZ CEA/SPhN Cédric SIMENEL
CEA/SPhN Philippe CHOMAZ GANIL Antoine DROUART
CEA/SPhN

• Theory Microscopic approach for nuclear
  dynamics
• Pairing and dynamics Time-dependent
  Hartree-Fock-Bogoliubov ( spherical TDHFB code
  using Skyrme energy density functional)
• Collective excitations ( pairing excitations,
  monopole excitations, also direct decay of giant
  resonances )
• Fusion at the barrier with 3D-TDHF code (P.
  Bonche et al.)
• Experiment (Ganil, July 2008)
• Formation of heavy elements with nearly
  symmetric (semi-magic) projectile/target reaction
• 136Xe 96Zr / 124Sn ? 232Pu/260Rf

2
TDHFB Preliminary results on pairing vibrations

• TDHFB equations for quasi-particles density
  matrix
• Test-case 20O
• 20O 4 neutrons in the sd-shell
• Blue low-lying modes
• Red 2h? (2n with )
• a cooper pair across a major shell
• Outlook
• Search for collectivity in heavier systems

TDHFBPreliminary
d5/2-s1/2
d5/2-d3/2
d5/2-p1/2
d5/2-f7/2
QRPA
(Khan et al., PRC 69, 014314, 2004)