M. Cinausero

Experimental determination of the symmetry energy of a low density nuclear gas

Experimental analyses of moderate-temperature nuclear gases produced in the violent collisions of 35 MeV/nucleon Zn-64 projectiles with Mo-92 and Au-197 target nuclei reveal a large degree of alpha particle clustering at low densities. For these gases, temperature- and density-dependent symmetry energy coefficients have been derived from isoscaling analyses of the yields of nuclei with A <= 4. At densities of 0.01 to 0.05 times the ground-state density of symmetric nuclear matter, the temperature- and density-dependent symmetry energies range from 9.03 to 13.6 MeV. This is much larger than those obtained in mean-field calculations and reflects the clusterization of low-density nuclear matter. The results are in quite reasonable agreement with calculated values obtained with a recently proposed virial equation of state calculation.

Laboratory Tests of Low Density Astrophysical Nuclear Equations of State

Clustering in low density nuclear matter has been investigated using the NIMROD multidetector at Texas A&M University. Thermal coalescence modes were employed to extract densities, ρ, and temperatures, T, for evolving systems formed in collisions of 47A MeV (40)Ar+(112)Sn, (124)Sn and (64)Zn+(112)Sn, (124)Sn. The yields of d, t, (3)He, and (4)He have been determined at ρ=0.002 to 0.03 nucleons/fm(3) and T=5 to 11 MeV. The experimentally derived equilibrium constants for α particle production are compared with those predicted by a number of astrophysical equations of state. The data provide important new constraints on the model calculations.

Nuclear matter symmetry energy at 0.03(ρ/ρ0)0.2

Measurements of the density dependence of the free symmetry energy in low density clustered matter have been extended using the NIMROD multi-detector at Texas A&M University. Thermal coalescence models were employed to extract densities,

Isospin transport in 84 Kr + 112,124 Sn collisions at Fermi energies

\rho

GARFIELD + RCo digital upgrade: A modern set-up for mass and charge identification of heavy-ion reaction products

, and temperatures,

Effects of soil moisture on the detection of buried explosives by radiative neutron capture

T

Experimental Determination of In-Medium Cluster Binding Energies and Mott Points in Nuclear Matter

, for evolving systems formed in collisions of 47

Non-statistical decay and α-correlations in the 12C+ 12C fusion-evaporation reaction at 95 MeV

A

CsI(Tl)-photodiode detectors for γ-ray spectroscopy

MeV

The 8/spl pi/LP project: A 4/spl pi/ light charged particle detection array at LNL

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