Probing the fission properties of neutron-rich actinides with the astrophysical r process
1 University of Notre Dame, Notre Dame, Indiana 46556, USA
2 Theoretical Division, Los Alamos National Lab, Los Alamos, NM, 87545, USA
3 Los Alamos Center for Space and Earth Science Student Fellow, Los Alamos National Lab, Los Alamos, NM, 87545, USA
4 Nuclear and Chemical Science Division, Lawrence Livermore National Laboratory, Livermore, CA 94551, USA
5 Department of Physics, University of California, Davis, CA 95616, USA
6 Joint Institute for Nuclear Astrophysics Center for the Evolution of the Elements, USA
* e-mail: email@example.com
Published online: 28 September 2020
We review recent work examining the influence of fission in rapid neutron capture (r-process) nucleosynthesis which can take place in astrophysical environments. We briefly discuss the impact of uncertain fission barriers and fission rates on the population of heavy actinide species. We demonstrate the influence of the fission fragment distributions for neutron-rich nuclei and discuss currently available treatments, including recent macroscopic-microscopic calculations. We conclude by comparing our nucleosynthesis results directly with stellar data for metal-poor stars rich in r-process elements to consider whether fission plays a role in the so-called ‘universality’ of r-process abundances observed from star to star.
© The Authors, published by EDP Sciences, 2020
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