Experimentally Constrained (\(n,\gamma \)) Reaction Rates Relevant to r- and i-Process Nucleosynthesis

Journal Article · 31 December 2019 · Acta Physica Polonica. Series B

DOI: https://doi.org/10.5506/aphyspolb.51.667 · OSTI ID:1657658

Guttormsen, M. ^[1]; Larsen, A. C. ^[2]; Spyrou, A. ^[3]; Liddick, S. N. ^[4]

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1. Univ. of Oslo (Norway); NSCL / MSU
2. Univ. of Oslo (Norway)
3. Michigan State Univ., East Lansing, MI (United States). National Superconducting Cyclotron Lab., Joint Inst. for Nuclear Astrophysics
4. Michigan State Univ., East Lansing, MI (United States). National Superconducting Cyclotron Lab.

The element distribution that we observe in the Universe today, tells a fascinating story of nucleosynthesis events that have taken place throughout the 13.7-billion-years-long history starting with the Big Bang. It is known for a long time that radiative neutron-capture reactions play a major role in synthesizing elements heavier than iron. However, many questions remain when it comes to our understanding of neutron-capture processes in extreme stellar environments. In particular, the intermediate and rapid neutron-capture processes are very challenging to describe, as there exist little or no data on the much-needed neutron-capture rates. In this work we discuss possibilities to obtain indirect, experimental constrains on these rates by means of the Oslo and the β-Oslo methods.

• Research Organization: Michigan State Univ., East Lansing, MI (United States)
• Sponsoring Organization: European Cooperation in Science and Technology; National Science Foundation (NSF); USDOE National Nuclear Security Administration (NNSA)
• Grant/Contract Number: NA0003221
• OSTI ID: 1657658
• Journal Information: Acta Physica Polonica. Series B, Journal Name: Acta Physica Polonica. Series B Journal Issue: 3 Vol. 51; ISSN 0587-4254
• Publisher: Jagiellonian UniversityCopyright Statement
• Country of Publication: United States
• Language: English