Elements such as strontium (Sr) and barium (Ba), which are precursors to the heaviest elements, are primarily formed by which process during quieter stellar phases?
Answer
The s-process (slow neutron capture)
The s-process, or slow neutron capture, is responsible for creating elements up to bismuth during the much quieter late stages of a star's life, particularly in asymptotic giant branch (AGB) stars, and is responsible for elements like strontium and barium.
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