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

S. Barlini S. Piantelli G. Casini P.R. Maurenzig A. Olmi M. Bini S. Carboni G. Pasquali G. Poggi A.A. Stefanini R. Bougault 1 E. Bonnet 2 B. Borderie 3 A. Chbihi 2 J.D. Frankland 2 Diego Gruyer 2 O. Lopez 1 N. Le Neindre 1 M. Pârlog 1 M. F. Rivet 3 E. Vient 1 E. Rosato G. Spadaccini M. Vigilante M. Bruno T. Marchi L. Morelli M. Cinausero M. Degerlier F. Gramegna T. Kozik T. Twarog R. Alba C. Maiolino D. Santonocito
1 LPCC - Laboratoire de physique corpusculaire de Caen
2 GANIL - Grand Accélérateur National d'Ions Lourds
3 IPNO - Institut de Physique Nucléaire d'Orsay
Abstract : Isotopically resolved fragments with Z<=20 have been studied with high resolution telescopes in a test run for the FAZIA collaboration. The fragments were produced by the collision of a 84Kr beam at 35 MeV/nucleon with a n-rich (124Sn) and a n-poor (112Sn) target. The fragments, detected close to the grazing angle, are mainly emitted from the phase-space region of the projectile. The fragment isotopic content clearly depends on the n-richness of the target and it is a direct evidence of isospin diffusion between projectile and target. The observed enhanced neutron richness of light fragments emitted from the phase-space region close to the center of mass of the system can be interpreted as an effect of isospin drift in the diluted neck region.
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Submitted on : Monday, January 21, 2013 - 9:04:56 AM
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S. Barlini, S. Piantelli, G. Casini, P.R. Maurenzig, A. Olmi, et al.. Isospin transport in 84Kr + 112,124Sn collisions at Fermi energies. Physical Review C, American Physical Society, 2013, 87, pp.054607. ⟨10.1103/PhysRevC.87.054607⟩. ⟨in2p3-00778551⟩

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