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Heavy-residue isoscaling as a probe of the process of N/Z equilibration by G.A. Souliotis; M. Veselsky; D.V. Shetty; S.J. Yennello is a Physics and Astronomy article available to read on EtoBox.

What is Heavy-residue isoscaling as a probe of the process of N/Z equilibration about?

The isotopic and isobaric scaling behavior of the yield ratios of heavy projectile residues from the collisions of 25 MeV/nucleon 86 Kr projectiles on 124 Sn and 112 Sn targets is investigated and shown to provide information on the process of N/Z equilibration occurring between the projectile and the target. The logarithmic slopes α and β of the residue yield ratios with respect to residue neutron number N and neutron excess N -Z are obtained as a function of the atomic number Z and mass number A, respectively, whereas excitation energies are deduced from velocities. The relation of the isoscaling parameters α and β with the N/Z of the primary (excited) projectile fragments is employed to gain access to the degree of N/Z equilibration prior to fragmentation as a function of excitation energy. A monotonic relation between the N/Z difference of fragmenting quasiprojectiles and their excitation energy is obtained indicating that N/Z equilibrium is approached at the highest observed excitation energies. Simulations with a deep-inelastic transfer model are in overall agreement with the isoscaling conclusions. The present residue isoscaling approach to N/Z equilibration offers an attrac

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Author

G.A. Souliotis; M. Veselsky; D.V. Shetty; S.J. Yennello

Publisher

Elsevier Science; Elsevier ; Elsevier BV (ISSN 0370-2693)

Published

2004

Language

EN

Field

Physics and Astronomy (Physical Sciences)