Internal and kinetic temperatures of fragments in the framework of a nuclear statistical multifragmentation model

S. R. Souza, B. V. Carlson, R. Donangelo, W. G. Lynch, and M. B. Tsang
Phys. Rev. C 92, 024612 – Published 17 August 2015

Abstract

The agreement between the fragments' internal and kinetic temperatures with the breakup temperature is investigated using a statistical multifragmentation model, which makes no a priori assumption on the relationship between them. We thus examine the conditions for obtaining such agreement and find that, in the framework of our model, this holds only in a relatively narrow range of excitation energy. The role played by the qualitative shape of the fragments' state densities is also examined. Our results suggest that the internal temperature of the light fragments may be affected by this quantity, whose behavior may lead to constant internal temperatures over a wide excitation energy range. It thus suggests that the nuclear thermometry may provide valuable information on the nuclear state density.

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  • Received 27 November 2014

DOI:https://doi.org/10.1103/PhysRevC.92.024612

©2015 American Physical Society

Authors & Affiliations

S. R. Souza1,2, B. V. Carlson3, R. Donangelo1,4, W. G. Lynch5, and M. B. Tsang5

  • 1Instituto de Física, Universidade Federal do Rio de Janeiro Cidade Universitária, CP 68528, 21941-972, Rio de Janeiro, Brazil
  • 2Instituto de Física, Universidade Federal do Rio Grande do Sul, Av. Bento Gonçalves 9500, CP 15051, 91501-970, Porto Alegre, Brazil
  • 3Departamento de Física, Instituto Tecnológico de Aeronáutica-CTA, 12228-900, São José dos Campos, Brazil
  • 4Instituto de Física, Facultad de Ingeniería, Universidad de la República, Julio Herrera y Reissig 565, 11.300 Montevideo, Uruguay
  • 5National Superconducting Cyclotron Laboratory and Department of Physics and Astronomy Department, Michigan State University, East Lansing, Michigan 48824, USA

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Issue

Vol. 92, Iss. 2 — August 2015

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