Beta-decay half-lives of new neutron-rich chromium-to-nickel isotopes and their consequences for the astrophysical r-process

  • U. Bosch
  • , W. D. Schmidt-Ott
  • , P. Tidemand-Petersson
  • , E. Runte
  • , W. Hillebrandt
  • , M. Lechle
  • , F. K. Thielemann
  • , R. Kirchner
  • , O. Klepper
  • , E. Roeckl
  • , K. Rykaczewski
  • , D. Schardt
  • , N. Kaffrell
  • , M. Bernas
  • , Ph Dessagne
  • , W. Kurcewicz

Research output: Contribution to journalArticlepeer-review

51 Scopus citations

Abstract

Beta-decay studies of the new neutron-rich isotopes 58,59Cr, 63Mn, 66,67Co and 69Ni, yielding distinctly shorter half-lives than the corresponding theoretical predictions, are presented. The influence of the short half-lives on the r-process calculations of nuclear abundances is discussed. It is concluded that a significantly higher neutron density than the one obtained from explosive helium burning in supernovae is need to reproduce the observe abundances around A=80.

Original languageEnglish
Pages (from-to)22-26
Number of pages5
JournalPhysics Letters B
Volume164
Issue number1-3
DOIs
StatePublished - Dec 5 1985

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