University of Hertfordshire

By the same authors

Network calculations for r-process nucleosynthesis

Research output: Chapter in Book/Report/Conference proceedingConference contribution

  • I. Petermann
  • G. Martinez-Pinedo
  • A. Arcones
  • W. R. Hix
  • A. Kelic
  • K. Langanke
  • I. Panov
  • T. Rauscher
  • K-H Schmidt
  • Friedrich-Karl Thielemann
  • N. Zinner
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Original languageEnglish
Title of host publicationNuclear Physics in Astrophysics (NPAIV 2009)
EditorsA. Formicola, C. Gustavino, M. Junker
Place of PublicationBristol
PublisherIOP PUBLISHING LTD
Number of pages4
DOIs
Publication statusPublished - 2010
Event4th International Conference on Nuclear Physics in Astrophysics - Frascati, Italy
Duration: 8 Jun 200912 Jun 2009

Publication series

NameJournal of Physics Conference Series
Number1
Volume202
ISSN (Print)1742-6588

Conference

Conference4th International Conference on Nuclear Physics in Astrophysics
CountryItaly
CityFrascati
Period8/06/0912/06/09

Abstract

The r-process is known to be responsible for the synthesis of about half of the elements heavier than iron, nevertheless its astrophysical site has not yet been clearly ascertained, but observations indicate that at least two possible sites should contribute to the solar system abundance oft-process elements. The r-process being responsible for the production of elements heavier than Z = 56 operates rather robustly always resulting in a similar relative abundance pattern. From the nuclear-physics point of view the r-process requires the knowledge of a large number of reaction rates involving exotic nuclei that are not accessible by experiment and data have to be provided by theoretical predictions. We have developed for the first time a complete database of reaction rates that in addition to neutron-capture rates and beta-decay half-lives includes the dominant reactions that can induce fission (neutron-capture, beta-decay and spontaneous fission) and the corresponding fission yields. In addition, we have implemented these reaction rates in a fully implicit reaction network. The influence of the nuclear physics input constituted in the reaction rates based on the two mass models FRDM and ETFSI and on the astrophysical conditions simulating a cold or hot environment are examined.

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