Isospin observables from fragment energy spectra

Abstract

The energy spectra of light charged particles and intermediate mass fragments from 112Sn+112Sn and 124Sn+124Sn collisions at an incident energy of E/A=50 MeV have been measured with a large array of Silicon strip detectors. We used charged particle multiplicities detected in an array with nearly 4-pi coverage to select data from the central collision events. We study isospin observables analogous to ratios of neutron and proton spectra, including double ratios and yield ratios of t/3He and of asymmetries constructed from fragments with Z=3 to Z=8. Using the energy spectra, we can construct these observables as functions of kinetic energy. Most of the fragment asymmetry observables have a large sensitivity to sequential decays.

References in corpus (7)

• Neutron and Proton Transverse Emission Ratio Measurements and the Density Dependence of the Asymmetry Term of the Nuclear Equation of State
• Symmetry energy of dilute warm nuclear matter
• The influence of cluster emission and the symmetry energy on neutron-proton spectral double ratios
• Isospin Diffusion and Equilibration for Sn+Sn collisions at E/A=35 MeV
• Isospin Diffusion Observables in heavy ion reactions
• Isospin Distillation with Radial Flow: a Test of the Nuclear Symmetry Energy
• Cooling Dynamics in Multi-fragmentation processes

Cited by in corpus (8)

• Constraining the neutron-proton effective mass splitting using empirical constraints on the density dependence of nuclear symmetry energy around normal density
• Dynamics of clusters and fragments in heavy-ion collisions
• Effects of nuclear symmetry energy on eta meson production and its rare decay to the dark U-boson in heavy-ion reactions
• Probing Nuclear Symmetry Energy and its Imprints on Properties of Nuclei, Nuclear Reactions, Neutron Stars and Gravitational Waves
• Impact parameter smearing effects on isospin sensitive observables in heavy ion collisions
• Observing the Ping-pong Modality of Isospin Degree of Freedom in Cluster Emission from Heavy Ion Reactions
• Revisit to the yield ratio of triton and ${}^3$He as an indicator of neutron-rich neck emission
• Intermediate Mass Fragment Emission in ${}^{32}$S +${}^{51}$V, ${}^{109}$Ag, and ${}^{238}$U Collisions at E~=~31.6~MeV~A