761 articles – 7600 Notices  [english version]
HAL : in2p3-00701476, version 1

Fiche concise  Récupérer au format
Analysis of the neutron and proton contributions to the pygmy dipole mode in doubly magic nuclei
Yüksel E., Khan E., Bozkurt K.
Nuclear Physics A 877 (2012) 35-50 - http://hal.in2p3.fr/in2p3-00701476
Physique/Physique Nucléaire Théorique
Analysis of the neutron and proton contributions to the pygmy dipole mode in doubly magic nuclei
E. Yüksel, E. Khan1, K. Bozkurt
1 :  IPNO - Institut de Physique Nucléaire d'Orsay
http://ipnweb.in2p3.fr
CNRS : UMR8608 – IN2P3 – Université Paris XI - Paris Sud
IPN - 15, rue Georges Clemenceau - 91406 ORSAY CEDEX
France
The electric dipole excitations are investigated in the framework of the self-consistent HF + RPA approximation with Skyrme interactions. Magic O, Ca, Ni and Sn isotopes are used to investigate low-lying modes. Neutron and proton transition densities analysis of each nucleus is provided to examine the behavior of Pygmy Dipole Resonance (PDR) of nuclei under excitation, showing a complex pattern along the nuclear chart. The PDR in the very neutron-rich 70Ca nucleus exhibits a novel mode of excitation, the so-called arch mode. The collectivity of the PDR is also analysed.

Articles dans des revues avec comité de lecture
2012
Nuclear Physics A (Nucl. Phys. A)
Publisher Elsevier
ISSN 0375-9474 
877
35-50