Microcanonical studies on isoscaling
National Institute of Nuclear Physics and Engineering, P.O. Box MG6, Bucharest, Romania
Accepted: 17 January 2005
Published online: 8 February 2005
The exponential scaling of isotopic yields is investigated for sources of different sizes over a broad range of excitation energies and freeze-out volumes, in both primary and asymptotic stages of the decay in the framework of a microcanonical multifragmentation model. It was found that the scaling parameters have a strong dependence on the considered pair of equilibrated sources and excitation energy and are affected by the secondary particle emission of the break-up fragments. No significant influence of the freeze-out volume on the considered isotopic ratios has been observed. Deviations of microcanonical results from grandcanonical expectations are discussed.
PACS: 25.70.Pq Multifragment emission and correlations – / 24.10.Pa Thermal and statistical models –
© Società Italiana di Fisica and Springer-Verlag, 2005