Nuclear matter symmetry energy at
R Wada, K Hagel, L Qin, JB Natowitz, YG Ma… - Physical Review C …, 2012 - APS
Physical Review C—Nuclear Physics, 2012•APS
Measurements of the density dependence of the symmetry free energy in low-density
clustered matter have been extended using the Neutron Ion Multidetector for Reaction
Oriented Dynamics at Texas A&M University. Thermal coalescence models were employed
to extract densities ρ and temperatures T for evolving systems formed in collisions of 47 A
MeV 40 Ar+ 112 Sn, 124 Sn and 64 Zn+ 112 Sn, 124 Sn. Densities of 0.03⩽ ρ/ρ 0⩽ 0.2 and
temperatures in the range 5–10 MeV have been sampled. The symmetry free energy …
clustered matter have been extended using the Neutron Ion Multidetector for Reaction
Oriented Dynamics at Texas A&M University. Thermal coalescence models were employed
to extract densities ρ and temperatures T for evolving systems formed in collisions of 47 A
MeV 40 Ar+ 112 Sn, 124 Sn and 64 Zn+ 112 Sn, 124 Sn. Densities of 0.03⩽ ρ/ρ 0⩽ 0.2 and
temperatures in the range 5–10 MeV have been sampled. The symmetry free energy …
Measurements of the density dependence of the symmetry free energy in low-density clustered matter have been extended using the Neutron Ion Multidetector for Reaction Oriented Dynamics at Texas A&M University. Thermal coalescence models were employed to extract densities and temperatures for evolving systems formed in collisions of 47 MeV Ar+Sn,Sn and Zn+Sn, Sn. Densities of and temperatures in the range 5–10 MeV have been sampled. The symmetry free energy coefficients are found to be in good agreement with values calculated using a quantum statistical model. Values of the corresponding symmetry free energy coefficient are derived from the data using entropies derived from the model.
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