21 research outputs found
Isotope correlations as a probe for freeze-out characterization: central 124Sn+64Ni, 112Sn+58Ni collisions
124Sn+64Ni and 112Sn+58Ni reactions at 35 AMeV incident energy were studied
with the forward part of CHIMERA multi-detector. The most central collisions
were selected by means of a multidimensional analysis. The characteristics of
the source formed in the central collisions, as size, temperature and volume,
were inspected. The measured isotopes of light fragments (3 <= Z <=8) were used
to examine isotope yield ratios that provide information on the free neutron to
proton densities.Comment: 4 pages, Contribution to 8th International Conference on
Nucleus-Nucleus Collisions, Moscow 200
Comparison between data measured by INDRA and the prediction of the BNV transport model for Ar +Ni reaction at 95 A MeV
International audienc
Isospin effects studied with the chimera detector at 35 MeV/nucleon
The yield of light charged particles and intermediate mass fragments is studied for the neutron-rich, (124)Sn +(64)Ni, and neutron-poor, (112)Sn+(58)Ni, reactions at 35 MeV/nucleon as a function of the impact parameter. Our 3 main observations are: (i) The yields of (1)H, (3)He and (4)He particles in the neutron-poor system are enhanced with respect to the neutron-rich system and the yield of (3)H is suppressed at all impact parameters, (ii) The ratio of (3)H to (3)He yield is three times larger for neutron poor system, (iii) The N/Z ratio of the emitted intermediate-mass fragments shows dependence on the isospin of the system, (iv) The neutron richness of detected intermediate mass fragments depends strongly on their rapidity. The gross features of the experimental data are reproduced by quantum molecular dynamics model calculations
Isospin effects studied with the chimera detector at 35 MeV/nucleon
The yield of light charged particles and intermediate mass fragments is studied for the neutron-rich, Sn-124 +Ni-64, and neutron-poor, Sn-112+Ni-58, reactions at 35 MeV/nucleon as a function of the impact parameter. Our 3 main observations are: (i) The yields of H-1, He-3 and He-4 particles in the neutron-poor system are enhanced with respect to the neutron-rich system and the yield of H-3 is suppressed at all impact parameters, (ii) The ratio of H-3 to He-3 yield is three times larger for neutron poor system, (iii) The N/Z ratio of the emitted intermediate-mass fragments shows dependence on the isospin of the system, (iv) The neutron richness of detected intermediate mass fragments depends strongly on their rapidity. The gross features of the experimental data are reproduced by quantum molecular dynamics model calculations