Ab initio many-body calculations of nucleon-nucleus scattering

Journal Article · Wed Apr 15 04:00:00 EDT 2009 · Physical Review. C, Nuclear Physics

DOI:https://doi.org/10.1103/PHYSREVC.79.044606· OSTI ID:21286884

Quaglioni, Sofia; Navratil, Petr ^[1]

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1. Lawrence Livermore National Laboratory, P. O. Box 808, L-414, Livermore, California 94551 (United States)

We develop a new ab initio many-body approach capable of describing simultaneously both bound and scattering states in light nuclei, by combining the resonating-group method with the use of realistic interactions, and a microscopic and consistent description of the nucleon clusters. This approach preserves translational symmetry and the Pauli principle. We outline technical details and present phase-shift results for neutron scattering on {sup 3}H, {sup 4}He, and {sup 10}Be and proton scattering on {sup 3,4}He, using realistic nucleon-nucleon (NN) potentials. Our A=4 scattering results are compared to earlier ab initio calculations. We find that the CD-Bonn NN potential in particular provides an excellent description of nucleon-{sup 4}HeS-wave phase shifts. In contrast, the experimental nucleon-{sup 4}HeP-wave phase shifts are not well reproduced by any NN potential we use. We demonstrate that a proper treatment of the coupling to the n-{sup 10}Be continuum is successful in explaining the parity-inverted ground state in {sup 11}Be.

• OSTI ID: 21286884
• Journal Information: Physical Review. C, Nuclear Physics, Journal Name: Physical Review. C, Nuclear Physics Journal Issue: 4 Vol. 79; ISSN 0556-2813; ISSN PRVCAN
• Country of Publication: United States
• Language: English

Related Subjects

73 NUCLEAR PHYSICS AND RADIATION PHYSICS
BERYLLIUM 10
BERYLLIUM 11
COUPLING
GROUND STATES
HELIUM 3
HELIUM 4
INTERACTIONS
MANY-BODY PROBLEM
NEUTRON DIFFRACTION
NEUTRONS
NUCLEON-NUCLEON POTENTIAL
PARITY
PAULI PRINCIPLE
PHASE SHIFT
PROTONS
RESONATING-GROUP METHOD
SCATTERING
SYMMETRY
TRITIUM