2010/04/30 by C. A. Bertulani, C. De Conti · 2 citations
Mathematics · Physics and Astronomy · #Astronomical and nuclear sciences #Blocking (statistics) #Blocking effect #Eikonal approximation #Eikonal equation #Halo #Mathematics #Momentum (technical analysis) #Nuclear matter #Nuclear physics #Nuclear physics research studies #Nucleon #Particle physics #Pauli exclusion principle #Physics #Quantum Chromodynamics and Particle Interactions #Quantum mechanics #nucl-ex #nucl-th
paper · pdf · doi:10.1103/physrevc.81.064603
published as Phys.Rev.C81:064603,2010 · 10 pages, 9 figures, accepted for publication in Physics Review C
arxiv created 2010/05/21 · openalex publication_date 2010/06/03 · arxiv updated 2011/11/18 · openalex created_date 2025/10/10 · openalex updated_date 2026/08/05
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 Elab=50--300 MeV/nucleon. The effect is more evident in reactions involving halo nuclei.