Z-dependent Barriers in Multifragmentation from Poissonian Reducibility and Thermal Scaling

Details Z-dependent Barriers in Multifragmentation from Poissonian Reducibility and Thermal Scaling Z-dependent Barriers in Multifragmentation from Poissonian Reducibility and Thermal Scaling

1998-05-13

arxiv.org/abs/nucl-ex/9805002v1

Phys.Rev.Lett. 81 (1998) 770

Physics

Nuclear Physics

Nuclear Experiment

15 pages including 4 .ps figures. Submitted to Phys. Rev. Letters. Also available at http://csa5.lbl.gov/moretto/

Scientific paper

10.1103/PhysRevLett.81.770

We explore the natural limit of binomial reducibility in nuclear multifragmentation by constructing excitation functions for intermediate mass fragments (IMF) of a given element Z. The resulting multiplicity distributions for each window of transverse energy are Poissonian. Thermal scaling is observed in the linear Arrhenius plots made from the average multiplicity of each element. ``Emission barriers'' are extracted from the slopes of the Arrhenius plots and their possible origin is discussed.

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