Description
Isospin Effects and EoS in nuclear reactions
Isospin transport ratio is a powerful method to estimate the neutron-proton (n-p) equilibration in heavy-ion collisions, and extensively used to obtain information on the asy-stiffness of the nuclear Equation of State. In fact such a ratio is expected to bypass any perturbations introducing a linear
transformation of the chosen observable. In particular, it is supposed to overcome...
B. Gnoffo1,2, S. Pirrone2, G. Politi1,2, L. Acosta2,3, G. Cardella2, E. De Filippo2, E. Geraci1,2, L. Lo Monaco1, C. Maiolino4, N.S. Martorana1,4, A. Pagano2, E.V. Pagano4, M. Papa2, F. Risitano2,5, F. Rizzo1,4, P. Russotto4 and M. Trimarchi2,5
1) Dipartimento di Fisica e Astronomia E. Majorana, Università di Catania, Italy
2) INFN-Sezione di Catania, Italy
3) Instituto de Fisica,...
We investigated the possibility to probe the symmetry energy term of the nuclear equation of state with isoscaling observables from 40,48 Ca+ 40,48 Ca reactions at 35 AMeV . Data were obtained using the unique coupling of the VAMOS high acceptance spectrometer and the 4π INDRA detector. This required a precise study of the trajectory reconstruction in the spectrometer focal plane along with...
J. Quicray
On behalf of the INDRA and FAZIA collaborations
Normandie Univ, ENSICAEN, UNICAEN, CNRS/IN2P3, LPC Caen, 14000 Caen, France
The study of fragmentation reactions produced in heavy-ion collisions has permitted major advances in the understanding of the dynamics and thermodynamics of nuclear matter [1, 2] and is still one of the most promising tools to constrain its equation of...
Isoscaling effect with $Z$=1 and 2 particles in Sn+Sn at 270 AMeV
J. W. Lee for S$\pi$RIT collaboration
Korea University, Seoul, Korea
The mechanism of the fragmentation in heavy ion collision is studied with particle yields of light nuclei. In the thermal equilibrium view, the primary fragment yield can be predicted using the partition function of each fragment. However, the fragments...
The isospin dependence of in-medium nuclear effective interactions is a fundamental issue in nuclear physics and has broad ramifications in astrophysics. Its uncertainties, especially the difference of neutron-proton interactions in the isosinglet and isotriplet channels, affect significantly the density and momentum dependence of the isovector single-nucleon potential and nucleon-nucleon...
The CHIFAR experiment [1] was carried out at LNS in November 2019. Reactions between beams of 124Sn,124Xe and 112Sn, accelerated at 20 AMeV by the CS, and targets of 64Ni, 64Zn and 58Ni were studied by using the CHIMERA multi-detector [2] coupled to 10 telescopes of the FARCOS array [3]. The ten FARCOS telescopes, grouped in 5 couples, were arranged in a ring-like configuration covering about...
Pion spectral ratios and double ratios are measured for neutron rich 132Sn+124Sn and neutron deficient 108Sn+112Sn collisions. Both pi-/Pi+ single spectral ratios for the two systems and double ratios obtained by combining both systems can be described by a dcQMD calculations. These comparisons provide a correlated constraint on L and on the neutron-proton effect mass difference. This...
