Where are elements heavier than iron, such as gold or platinum, synthesized in relation to the star's stable fusion phases?

Answer

During the immense energy spike of the supernova explosion or via neutron capture processes

Elements heavier than iron are not made during the stable fusion phases within the star; they are synthesized during the supernova explosion itself or via neutron capture processes in the surrounding environment.

Where are elements heavier than iron, such as gold or platinum, synthesized in relation to the star's stable fusion phases?
Elementhydrogencompositionstarsupergiant