Isospin-dependent optical potentials in Dirac-Brueckner-Hartree-Fock approach

Journal Article · Sun Jan 15 00:00:00 EST 2006 · Physical Review. C, Nuclear Physics

DOI:https://doi.org/10.1103/PhysRevC.73.014614· OSTI ID:20771211

Jian, Rong ^[1]; Zhongyu, Ma ^[2]; Giai, Nguyen Van ^[3]

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1. China Institute of Atomic Energy, Beijing 102413 (China)
2. China Center of Advanced Science and Technology (World Laboratory), Beijing 100080 (China)
3. Institut de Physique Nucleaire, IN2P3-CNRS, F-91406 Orsay Cedex (France)

The relativistic microscopic optical potential (RMOP) is studied within the framework of the Dirac-Brueckner-Hartree-Fock (DBHF) approach. A new decomposition of the Dirac structure of nuclear self-energy in the DBHF is extended to asymmetric nuclear matter calculations. A nucleon effective interaction is introduced to reproduce the results of the G matrix. The real part of nucleon self-energy in asymmetric nuclear matter is calculated with the G matrix in the Hartree-Fock approach, while the imaginary part is obtained from the polarization diagram. Nuclear optical potentials in finite nuclei are derived from the self-energies in asymmetric matter through a local-density approximation. The differential cross sections and the analyzing powers in p+{sup 40}Ca and p+{sup 208}Pb elastic scattering at E{sub p}{<=}200 MeV are studied with these RMOPs. A satisfactory agreement with the experimental data is found. This is achieved without readjusting phenomenologically the RMOP derived from the DBHF plus polarization diagram.

• OSTI ID: 20771211
• Journal Information: Physical Review. C, Nuclear Physics, Vol. 73, Issue 1; Other Information: DOI: 10.1103/PhysRevC.73.014614; (c) 2006 The American Physical Society; Country of input: International Atomic Energy Agency (IAEA); ISSN 0556-2813
• Country of Publication: United States
• Language: English

Related Subjects

73 NUCLEAR PHYSICS AND RADIATION PHYSICS
ASYMMETRY
CALCIUM 40 TARGET
DIFFERENTIAL CROSS SECTIONS
ELASTIC SCATTERING
G MATRIX
HARTREE-FOCK METHOD
ISOSPIN
LEAD 208 TARGET
MASS NUMBER
MEV RANGE
NUCLEAR FORCES
NUCLEAR MATTER
NUCLEAR POTENTIAL
NUCLEONS
OPTICAL MODELS
POLARIZATION
POLARIZATION-ASYMMETRY RATIO
PROTON REACTIONS
PROTON-NUCLEON INTERACTIONS
RELATIVISTIC RANGE
SELF-ENERGY