Systematic and correlated nuclear uncertainties in the i-process at the neutron shell closure N = 82

Understand

Nuclear astrophysics simulations aiming to study the origin of the elements in stars require a multitude of nuclear physics input.

• Both systematic model dependent and statistically correlated uncertainties need to be considered.
• An application where realistic uncertainty assessments are especially important is the intermediate neutron capture process or i process: a neutron capture regime with neutron densities intermediate between the slow and rapid processes.
• Accordingly, the main network flux proceeds on the neutron-rich unstable isotopes up to 4-5 species off the valley of stability.