Nucleosynthesis of $^{60}$Fe and constraints on the nuclear level density and photon strength function.

ORAL

Abstract

$^{60}$Fe is created in massive stars prior to core collapse supernova. The signature $\gamma$-rays from $\beta$-decay of this isotope indicate ongoing nucleosynthesis in the Galaxy among other interesting astrophysical processes. In order to understand these observations a complete understanding of the creation, destruction and nuclear properties of $^{60}$Fe in the astrophysical environment are required. Due to the short half-life of $^{59}$Fe a direct capture reaction experiment to determine the cross section of $^{59}$Fe(n,$\gamma$)$^{60}$Fe has been a challenge and remains the most uncertain link in the reaction chain to date. Using the $\beta$-decay of a $^{60}$Mn radioactive beam to populate high energy states in the $^{60}$Fe nucleus, an indirect constraint for this reaction was made using the $\beta$-Oslo Method. Results from this analysis were used as input in TALYS and the new constraint on $^{59}$Fe(n,$\gamma$)$^{60}$Fe will be presented.

Authors

  • Debra Richman, Artemis Spyrou, Mallory Smith, Katie Childers, Rebecca Lewis, Sean Liddick, Stephanie Lyons, Alicia Palimisano, Chandana Sumithrarachchi

    • Michigan State University
  • Alex Dombos, Farheen Naqvi

    • University of Notre Dame
  • Ann-Cecilie Larsen, Magne Guttormsen, Joergen Midtboe

    • University of Oslo
  • Panos Gastis, Georgios Perdikakis

    • Central Michigan University
  • Aaron Couture, Chris Prokop

    • Los Alamos National Laboratory
  • Adrianna Ureche

    • University of California Berkeley
  • Ben Crider

    • Mississippi State University