Fast nucleon emission as a probe of the isospin momentum dependence

Abstract

In this article we investigate the structure of the non-local part of the symmetry term, that leads to a splitting of the effective masses of protons and neutrons in asymmetric matter. Based on microscopic transport simulations we suggest some rather sensitive observables in collisions of neutron-rich (unstable) ions at intermediate ($RIA$) energies. In particular we focus the attention on pre-equilibrium nucleon emissions. We discuss interesting correlations between the N/Z content of the fast emitted particles and their rapidity or transverse momentum, that show a nice dependence on the prescription used for the effective mass splitting.

5 pages, 6 figures, revtex4

References in corpus (3)

• Reaction Dynamics with Exotic Beams
• Effective Nucleon Masses in Symmetric and Asymmetric Nuclear Matter
• Isospin splitting of the nucleon mean field

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