Abstract
Isotopically resolved fragments up to Z 20 have been studied in a test experiment by the FAZIA Collaboration with a three-stage telescope. The reactions 84Kr+112Sn (n-poor) and 84Kr+124Sn (n-rich) at 35 MeV/nucleon were measured. The telescope was located near the grazing angle, so the detected fragments are mainly emitted from the phase-space region of the projectile. In the following, evidences for isospin diffusion and drift will be discussed.
Highlights
The production of many fragments is one of the main features of heavyion reactions at bombarding energies higher than 15–20 MeV/nucleon
We show some results obtained bombarding with a 84Kr beam at 35 MeV/nucleon two targets with different isospin: 112Sn (n-poor system) and 124Sn (n-rich)
The systems 84Kr+112Sn and 84Kr+124Sn at 35 MeV/nucleon have been studied by the FAZIA Collaboration
Summary
The production of many fragments is one of the main features of heavyion reactions at bombarding energies higher than 15–20 MeV/nucleon. The study of the isospin content of fragments and light particles, gives clues on different processes of isospin transport: (a) isospin “diffusion”, related to the isospin asymmetry between the reacting nuclei (i.e. projectile and target are chosen with different N/Z values) [2, 3, 6, 7, 10]; (b) isospin “drift” (or “migration”), related to the density gradient which develops between the interacting nuclei, associated to the formation of a diluted “neck” [10,11,12,13]. We show some results obtained bombarding with a 84Kr beam at 35 MeV/nucleon two targets with different isospin: 112Sn (n-poor system) and 124Sn (n-rich)
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