Continuum Coupling and Single-Nucleon Overlap Integrals

Journal Article · Mon Jan 01 04:00:00 EST 2007 · Nuclear Physics A

DOI:https://doi.org/10.1016/j.nuclphysa.2007.07.004· OSTI ID:931829

Michel, N. ^[1]; Nazarewicz, Witold ^[2]; Ploszajczak, M. ^[3]

---

1. University of Tennessee, Knoxville (UTK) & Oak Ridge National Laboratory (ORNL)
2. ORNL
3. Grand Accelerateur National d'Ions Lourds (GANIL)

The presence of a particle continuum, both of a resonant and non-resonant character, can significantly impact spectroscopic properties of weakly bound nuclei and excited nuclear states close to, and above, the particle emission threshold. In the framework of the continuum shell model in the complex momentum plane, the so-called Gamow shell model, we discuss salient effects of the continuum coupling on the one-neutron overlap integrals and the associated spectroscopic factors in neutron-rich helium and oxygen nuclei. In particular, we demonstrate a characteristic near-threshold energy dependence of the spectroscopic factors for different \{ell}-waves. We show also that the realistic radial overlap functions, which are needed for the description of transfer reactions, can be generatd by single-particle wave functions of the appropriately chosen complex potential.

• Research Organization: Oak Ridge National Laboratory (ORNL)
• Sponsoring Organization: SC USDOE - Office of Science (SC)
• DOE Contract Number: AC05-00OR22725
• OSTI ID: 931829
• Journal Information: Nuclear Physics A, Journal Name: Nuclear Physics A Journal Issue: 1-2 Vol. 794
• Country of Publication: United States
• Language: English

Related Subjects

Continuum
Exotic nuclei
Gamow shell model
Overlap integrals
Shell model
Spectroscopic factors