Pauli blocking and medium effects in nucleon knockout reactions
- Physics Department, Texas A and M University-Commerce, Commerce, Texas 75428-3011 (United States)
- Campus Experimental de Itapeva, Universidade Estadual Paulista, 18409-010 Itapeva, SP (Brazil)
We study medium modifications of the nucleon-nucleon (NN) cross sections and their influence on the nucleon knockout reactions. Using the eikonal approximation, we compare the results obtained with free NN cross sections with those obtained with a purely geometrical treatment of Pauli blocking and with NN obtained with more elaborated Dirac-Bruecker methods. The medium effects are parametrized in terms of the baryon density. We focus on symmetric nuclear matter, although the geometrical Pauli blocking also allows for the treatment of asymmetric nuclear matter. It is shown that medium effects can change the nucleon knockout cross sections and momentum distributions up to 10% in the energy range E{sub lab}=50-300 MeV/nucleon. The effect is more evident in reactions involving halo nuclei.
- OSTI ID:
- 21388607
- Journal Information:
- Physical Review. C, Nuclear Physics, Vol. 81, Issue 6; Other Information: DOI: 10.1103/PhysRevC.81.064603; (c) 2010 The American Physical Society; ISSN 0556-2813
- Country of Publication:
- United States
- Language:
- English
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Related Subjects
ASYMMETRY
CHANNELING
COMPARATIVE EVALUATIONS
CROSS SECTIONS
DENSITY
DISTRIBUTION
EIKONAL APPROXIMATION
KNOCK-OUT REACTIONS
MEV RANGE
MODIFICATIONS
NUCLEAR HALOS
NUCLEAR MATTER
NUCLEON-NUCLEON INTERACTIONS
NUCLEONS
SYMMETRY
APPROXIMATIONS
BARYON-BARYON INTERACTIONS
BARYONS
CALCULATION METHODS
DIRECT REACTIONS
ELEMENTARY PARTICLES
ENERGY RANGE
EVALUATION
FERMIONS
HADRON-HADRON INTERACTIONS
HADRONS
INTERACTIONS
MATTER
NUCLEAR REACTIONS
PARTICLE INTERACTIONS
PHYSICAL PROPERTIES