Neutron to proton ratios of quasiprojectile and midrapidity emission in the Ni58+Ni58 reaction at 52 MeV/nucleon

D. Thériault et al.
Phys. Rev. C 71, 014610 – Published 28 January 2005

Abstract

By combining data from a charged particle Ni58+Ni58 experiment at 52 MeV/nucleon with an Ar36+Ni58 experiment at 50 MeV/nucleon for which free neutrons have been detected, an increase in the neutron to proton ratio of the whole nuclear material at midrapidity has been experimentally observed in the reaction Ni58+Ni58 at 52 MeV/nucleon. The neutron-to-proton ratio of the quasi-projectile emission is analyzed for the same reactions and is seen to decrease below the ratio of the initial system. Those observations suggest that an asymmetric exchange of neutrons and protons between the quasiprojectile and the midrapidity region exists.

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  • Received 2 March 2004

DOI:https://doi.org/10.1103/PhysRevC.71.014610

©2005 American Physical Society

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Vol. 71, Iss. 1 — January 2005

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