Speaker
Description
The equation of state (EoS) plays a key role in many different aspects of modern physics, being fundamental for understanding the structure of nuclear matter, the properties of neutron stars, core-collapse supernova explosions, and the synthesis of heavy elements. While the properties of proton-neutron symmetric matter are relatively well known, the study of asymmetric matter via properties of neutron-rich nuclei became a current focus of investigation. The asymmetry part of the nuclear EoS is expressed by the symmetry energy at saturation J and its slope L. Constraining these parameters is one of the central issues in nuclear physics, especially since the slope parameter L has not yet been constrained well experimentally. It has been identified that a precise determination of the neutron removal cross section of neutron-rich nuclei, which is directly related to the neutron skin, would provide a much better constraint on L. To this end, the experiment was performed with the neutron-rich tin isotopes in the mass range A=124-134 on carbon targets at the R3B setup at the GSI/FAIR facility in inverse kinematics with very large acceptance. The goal of which is to constrain the L parameter from the accurate measurement of the neutron removal cross section by comparison to density functional theory.
This project was supported by the BMBF project No. 05P15RDFN1, the Helmholtz Research Academy Hesse for FAIR, and the GSI-TU Darmstadt cooperation.
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