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Probing the fission properties of neutron-rich actinides with the astrophysical r process

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arxiv 2006.10905 v1 pith:TND7OF7F submitted 2020-06-19 nucl-th astro-ph.HE

Probing the fission properties of neutron-rich actinides with the astrophysical r process

classification nucl-th astro-ph.HE
keywords fissionprocessastrophysicaldiscussinfluenceneutron-richnucleosynthesisrecent
verification ladder T0 review T1 audit T2 compute T3 formal T4 reserved
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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.

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