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arXiv · 1004.2096

Pauli blocking and medium effects in nucleon knockout reactions

C. A. Bertulani·C. De Conti
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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 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=50-300 MeV/nucleon. The effect is more evident in reactions involving halo nuclei.

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C. A. Bertulani, C. De Conti. 2010-05-21. Pauli blocking and medium effects in nucleon knockout reactions. https://doi.org/10.1103/physrevc.81.064603

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