Events

April 1, 2016 at 11:00 pm

INPP Seminar | Chemical Equilibrium in Low Density Nuclear Matter, April 5

The Institute of Nuclear and Particle Physics (INPP) presents Joseph B. Natowitz, of Texas A & M University, presenting Chemical Equilibrium in Low Density Nuclear Matter,” on Tuesday, April 5, at at 4 p.m. in Edwards Accelerator Lab, Roger W. Finlay Conference Room.

Joseph B. Natowitz

Joseph B. Natowitz

Abstract:  Conventional theoretical calculations of nuclear matter properties based on mean-field approaches fail to give the correct low-temperature, low-density limits for composition and symmetry energy which are governed by the appearance of clusters. Data from heavy-ion collisions can be used to probe clusterization and the symmetry energy at subsaturation densities. From the data, in medium cluster binding energies and Mott points for d, t,3He and α clusters produced in low density nuclear matter and    may be extracted. The low densities and moderate temperatures explored are   comparable to those expected for the neutrinosphere, the surface of last scattering, in a supernova  explosion. The neutrino flavor spectra are strongly influenced by the composition of the low density matter in the vicinity of the neutrinosphere. The observations of the matter composition from the laboratory experiments have been used to benchmark astrophysical equations of state employed in supernova modelling.

Leave a Reply

Your email address will not be published. Required fields are marked *

*