In AGB stars nearing the end of their lives, what process gradually builds elements like barium and lead through slow neutron capture?

Answer

$s$-process

The $s$-process, or slow neutron capture, occurs in asymptotic giant branch (AGB) stars, allowing nuclei time to undergo beta decay before capturing another neutron, thus building elements gradually.

In AGB stars nearing the end of their lives, what process gradually builds elements like barium and lead through slow neutron capture?
astronomystarsElementsFusionnucleosynthesis