Light clusters in nuclear matter of finite temperature

Abstract

We investigate properties and the distribution of light nuclei (A<4) in symmetric nuclear matter of finite temperature within a microscopic framework. For this purpose we have solved few-body Alt-Grassberger-Sandhas type equations for quasi-nucleons that include self-energy corrections and Pauli blocking in a systematic way. In a statistical model we find a significant influence in the composition of nuclear matter if medium effects are included in the microscopic calculation of nuclei. If multiplicities are frozen out at a certain time (or volume), we expect significant consequences for the formation of light fragments in a heavy ion collision. As a consequence of the systematic inclusion of medium effects the ordering of multiplicities becomes opposite to the law of mass action of ideal components. This is necessary to explain the large abundance of $\alpha$-particles in a heavy ion collision that are otherwise largely suppressed in an ideal equilibrium scenario.

9 pages, 9 figures, epja-style files

References in corpus (8)

• Characteristics of the fragments produced in central collisions of 129Xe+ natSn from 32 to 50 AMeV
• The alpha-particle in nuclear matter
• Medium corrections in the formation of light charged particles in heavy ion reactions
• Emission time scale of light particles in the system Xe+Sn at 50 AMeV. A probe for dynamical emission ?
• Medium modifications of the nucleon--deuteron break--up cross section in the Faddeev approach
• Three-body properties in hot and dense nuclear matter
• On the origin of the radial flow in low energy heavy ion reactions
• In-medium nucleon-nucleon potentials in configuration space

Cited by in corpus (7)

• Experimental determination of the symmetry energy of a low density nuclear gas
• Tracing the evolution of the symmetry energy of hot nuclear fragments from the compound nucleus towards multifragmentation
• Cooper Triples in Attractive Three-Component Fermions: Implication for Hadron-Quark Crossover
• Light-front Nambu--Jona-Lasinio model at finite temperature and density
• The in-medium few-body problem
• Transport Model Comparison Studies of Intermediate-Energy Heavy-Ion Collisions
• Dynamics of few-body states in a medium