[Mesa-users] Suppressing CNO reactions

[Francis Timmes]

> Can someone tell me a little about rc12ap_to_o16? It's listed as c12(a,p)n15(p,g)o16 -- but why is it categorized as cno, when it's an alpha capture on carbon?

explore the attached figure.
the arrows point in the direction of the main flow, but all of the 
charged particle reactions have a forward and reverse rate.

c12(a,p) is a reverse reaction which takes a higher temperature to be come appreciable,
but it is always there. n15(p,g) is the normal forward flow of cycle 2 to o16.

note: c12(a,p)n15(p,g)o16 is effectively c12(a,g)o16 - the critical reaction of helium burning.

does this help?

fxt





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