Isovector Vibrations in Nuclear Matter at Finite Temperature

M. Di Toro; V. M. Kolomietz; A. B. Larionov

doi:10.1103/PhysRevC.59.3099

Isovector Vibrations in Nuclear Matter at Finite Temperature

Nuclear Theory 2011-01-25 v1

Authors: M. Di Toro , V. M. Kolomietz , A. B. Larionov

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Abstract

We consider the propagation and damping of isovector excitations in heated nuclear matter within the Landau Fermi-liquid theory. Results obtained for nuclear matter are applied to calculate the Giant Dipole Resonance (GDR) at finite temperature in heavy spherical nuclei within Steinwedel and Jensen model. The centroid energy of the GDR slightly decreases with increasing temperature and the width increases as $T^2$ for temperatures $T < 5$ MeV in agreement with recent experimental data for GDR in $^{208}$ Pb and $^{120}$ Sn. The validity of the method for other Fermi fluids is finally suggested.

Keywords

isovector excitations nuclear matter finite temperature landau fermi-liquid giant dipole resonance damping

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@article{arxiv.nucl-th/9807070,
  title  = {Isovector Vibrations in Nuclear Matter at Finite Temperature},
  author = {M. Di Toro and V. M. Kolomietz and A. B. Larionov},
  journal= {arXiv preprint arXiv:nucl-th/9807070},
  year   = {2011}
}

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gzipped LaTeX file with text: 19 pages, 26 blocks; 3 gzipped *.ps files with figures: 50 blocks

Isovector Vibrations in Nuclear Matter at Finite Temperature

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