On the Production of the Light Heavy-Elements (A~90)

The elements heavier than iron are believed to be synthesized through a combination of rapid (r) and slow (s) neutron capture processes. The s-process and r-process are each generally responsible for half of the heavy elements overall. The specific astrophysical site(s) of the r-process is not known for sure, but neutron star mergers and core-collapse supernovae appear to be good candidates. The s-process occurs in asymptotic giant branch stars (main component) and massive stars (weak component). Many of the light heavy-elements (LHEs) 70