Conveners
Thursday - Session 2: Explosive Stellar Objects and Nuclear Physics: r process - II
- Nobuya Nishimura (RIKEN)
For the BRIKEN, RIBF207-ZDMRTOF collaboration
In the stellar rapid ($r$-) neutron-capture process nucleosynthesis, successive neutron-capture reactions under a large neutron-density environment push the matter toward the neutron-rich side until the beta-decay processes compete and heavier elements are formed. When neutron ceases, matters along the $r$-process path beta-decay to stability,...
The nuclear properties such as lifetimes and masses of the neutron-rich nuclei are important parameters to investigate the astrophysical rapid neutron capture process (r-process). However, the difficulty in the production of those neutron-rich nuclei, especially at the waiting points on the neutron closed shell $N = 126$ and beyond, makes their experimental studies difficult. Therefore, the...
The origin of nuclei heavier than iron is still an unsolved biggest question in nuclear astrophysics. The rapid and slow neutron-capture processes (r- and s-processes) are believed to be the origin of the neutron-rich heavy nuclei in the solar system. In addition to the two processes, recent spectroscopic observations of metal deficient asymptotic giant branch stars have raised the need for an...
The nuclear data of neutron-rich nuclei, e.g., mass, lifetime, and neutron-capture cross section, are important for understanding the rapid neutron-capture (r-) process, because a balance of net neutron-capture rate and β–decay rate is crucial to determine its path. It is difficult to access the r-process nuclei due to their locations far from stability; thus, theoretical predictions are...
