Distinctive features of Coulomb-related emissions in peripheral heavy ion collisions at Fermi energies - Nuclear ExperimentReport as inadecuate




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Abstract: Light charged particles emitted at about 90 deg in the frame of theprojectile-like fragment in semi-peripheral collisions of 93Nb+93Nb at 38A MeVgive evidence for the simultaneous occurrence of two different productionmechanisms. This is demonstrated by differences in the kinetic energy spectraand in the isotopic composition of the particles. The emission with a softerkinetic energy spectrum and a low N-Z ratio for the hydrogen isotopes isattributed to an evaporation process. The harder emission, with a much higherN-Z ratio, can be attributed to a ``midvelocity- process consisting of anon-isotropic emission, on a short time-scale, from the surface of theprojectile-like fragment.



Author: S. Piantelli, P.R. Maurenzig, A. Olmi, L. Bardelli, M. Bini, G. Casini, A. Mangiarotti, G. Pasquali, G. Poggi, A.A. Stefanini

Source: https://arxiv.org/







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