Zeitschrift für Physik A Atoms and Nuclei

, Volume 320, Issue 2, pp 273–281 | Cite as

Disappearance of the hindrance ofE1-transition involving loosely bound nucleon

  • T. Uchiyama
  • H. Morinaga


AlthoughE1-transition between levels below giant dipole resonance are almost always strongly hindered, there are several exceptions as observed in11Be and13C. These fastE1-transitions are studied by adopting a simple “cutoff” model, in which the behavior of single particle wave functions only outside of the nucleus contribute. The results are compared with the particle-GDR coupling model. The reason why theE1-hindrance disappears is explained. We also investigate the direct capture of thermal neutron by40Ca andN=82 nuclei, where similar situation is observed. Further, the implication of the direct capture in multiple neutron capture is discussed.


Elementary Particle Single Particle Coupling Model Thermal Neutron Neutron Capture 
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Copyright information

© Springer-Verlag 1985

Authors and Affiliations

  • T. Uchiyama
    • 1
  • H. Morinaga
    • 2
  1. 1.Department of PhysicsTohoku UniversitySendaiJapan
  2. 2.Fakultät für PhysikTechnische Universität MünchenGarchingGermany

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