University of Hertfordshire

From the same journal

By the same authors

Documents

  • 0903

    Accepted author manuscript, 243 KB, PDF document

  • E. Litvinova
  • H. P. Loens
  • K. Langanke
  • G. Martinez-Pinedo
  • T. Rauscher
  • P. Ring
  • Friedrich-Karl Thielemann
  • V. Tselyaev
View graph of relations
Original languageEnglish
Pages (from-to)26-37
Number of pages12
JournalNuclear Physics A
Volume823
Issue1-4
DOIs
Publication statusPublished - 15 May 2009

Abstract

We have computed dipole strength distributions for nickel and tin isotopes within the Relativistic Quasiparticle Time Blocking Approximation (RQTBA). These calculations provide a good description of data, including the neutron-rich tin isotopes (130.132)Sn. The resulting dipole strengths have been implemented in Hauser-Feshbach calculations of astrophysical neutron capture rates relevant for r-process nucleosynthesis studies. The RQTBA calculations show the presence of enhanced dipole strength at energies around the neutron threshold for neutron rich nuclei. The computed neutron capture rates are sensitive to the fine structure of the low lying dipole strength. which emphasizes the importance of a reliable knowledge of this excitation mode. (C) 2009 Elsevier B.V. All rights reserved.

ID: 1620570