The browser you are using is not supported by this website. All versions of Internet Explorer are no longer supported, either by us or Microsoft (read more here: https://www.microsoft.com/en-us/microsoft-365/windows/end-of-ie-support).

Please use a modern browser to fully experience our website, such as the newest versions of Edge, Chrome, Firefox or Safari etc.

Joakim

Joakim Cederkäll

Professor

Joakim

Determination of the neutron-capture rate of C 17 for r -process nucleosynthesis

Author

  • M. Heine
  • S. Typel
  • M. R. Wu
  • T Adachi
  • Y. Aksyutina
  • J. Alcantara
  • S. Altstadt
  • H Alvarez-Pol
  • N. Ashwood
  • L. Atar
  • T. Aumann
  • V. Avdeichikov
  • M. Barr
  • S. Beceiro-Novo
  • D. Bemmerer
  • J. Benlliure
  • C. A. Bertulani
  • K. Boretzky
  • M. J. G. Borge
  • G. Burgunder
  • M Caamano
  • C. Caesar
  • E. Casarejos
  • W. Catford
  • J. Cederkäll
  • S. Chakraborty
  • M. Chartier
  • L. V. Chulkov
  • D Cortina-Gil
  • R. Crespo
  • U Datta Pramanik
  • P. Diaz Fernandez
  • I. Dillmann
  • Z. Elekes
  • J Enders
  • O. Ershova
  • A. Estrade
  • F. Farinon
  • L. M. Fraile
  • M. Freer
  • M. Freudenberger
  • H O U Fynbo
  • D. Galaviz
  • H. Geissel
  • R Gernhäuser
  • Kathrin Göbel
  • P. Golubev
  • Federico Diaz-Gonzalez
  • J. Hagdahl
  • B. Jakobsson
Show all

Summary, in English

With the RB3-LAND setup at GSI we have measured exclusive relative-energy spectra of the Coulomb dissociation of C18 at a projectile energy around 425A MeV on a lead target, which are needed to determine the radiative neutron-capture cross sections of C17 into the ground state of C18. Those data have been used to constrain theoretical calculations for transitions populating excited states in C18. This allowed to derive the astrophysical cross section σnγ∗ accounting for the thermal population of C17 target states in astrophysical scenarios. The experimentally verified capture rate is significantly lower than those of previously obtained Hauser-Feshbach estimations at temperatures T9≤1 GK. Network simulations with updated neutron-capture rates and hydrodynamics according to the neutrino-driven wind model as well as the neutron-star merger scenario reveal no pronounced influence of neutron capture of C17 on the production of second- and third-peak elements in contrast to earlier sensitivity studies.

Department/s

  • Nuclear physics

Publishing year

2017-01-30

Language

English

Publication/Series

Physical Review C: covering nuclear physics

Volume

95

Issue

1

Document type

Journal article

Publisher

American Physical Society

Topic

  • Subatomic Physics

Status

Published

ISBN/ISSN/Other

  • ISSN: 2469-9985