Fission in the $r$-process
Frontiers (2019)
Contributed presentation on 05/2019
Fission has often been a neglected nuclear physics input for r-process simulations, despite its effect on the presence of long-lived actinides and influence in creation of the second (A~130) peak. I cover recent progress made at Los Alamos in improving fission properties relevant for the rapid neutron capture process (r-process). These new calculations include results for neutron-induced fission rates, beta-delayed fission and fission yields that arise from a detailed study of the Finite-Range Liquid-Drop Model. I end with a discussion of the impact of these new theory calculations on the abundances and observational properties of the r-process.
Related Publications
| Year | Authors | Title (Click for more details) | Journal (PDF) |
|---|---|---|---|
| 2019 | N. Vassh, R. Vogt, R. Surman, J. Randrup, et al. | Using excitation-energy dependent fission yields to identify key fissioning nuclei in r-process nucleosynthesis | J. Phys. G 46 065202 |
| 2018 | M. Mumpower, T. Kawano, T. M. Sprouse, N. Vassh, et al. | $\beta$-delayed fission in $r$-process nucleosynthesis | ApJ 869 1 |