skip to main content
OSTI.GOV title logo U.S. Department of Energy
Office of Scientific and Technical Information

Title: Pauli blocking and medium effects in nucleon knockout reactions

Abstract

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.

Authors:
 [1];  [2]
  1. Physics Department, Texas A and M University-Commerce, Commerce, Texas 75428-3011 (United States)
  2. Campus Experimental de Itapeva, Universidade Estadual Paulista, 18409-010 Itapeva, SP (Brazil)
Publication Date:
OSTI Identifier:
21388607
Resource Type:
Journal Article
Journal Name:
Physical Review. C, Nuclear Physics
Additional Journal Information:
Journal Volume: 81; Journal Issue: 6; Other Information: DOI: 10.1103/PhysRevC.81.064603; (c) 2010 The American Physical Society; Journal ID: ISSN 0556-2813
Country of Publication:
United States
Language:
English
Subject:
73 NUCLEAR PHYSICS AND RADIATION PHYSICS; 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

Citation Formats

Bertulani, C A, and De Conti, C. Pauli blocking and medium effects in nucleon knockout reactions. United States: N. p., 2010. Web. doi:10.1103/PHYSREVC.81.064603.
Bertulani, C A, & De Conti, C. Pauli blocking and medium effects in nucleon knockout reactions. United States. doi:10.1103/PHYSREVC.81.064603.
Bertulani, C A, and De Conti, C. Tue . "Pauli blocking and medium effects in nucleon knockout reactions". United States. doi:10.1103/PHYSREVC.81.064603.
@article{osti_21388607,
title = {Pauli blocking and medium effects in nucleon knockout reactions},
author = {Bertulani, C A and De Conti, C},
abstractNote = {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.},
doi = {10.1103/PHYSREVC.81.064603},
journal = {Physical Review. C, Nuclear Physics},
issn = {0556-2813},
number = 6,
volume = 81,
place = {United States},
year = {2010},
month = {6}
}