5
The CNO
Cycle
•Gives
way around need for p ®n during the collision
•Still
must happen later – but don’t need to rare events simultaneously
•Trade
off is need for higher energy collisions
(T>16 million K)
•Add
p to some nucleus where new one is still “stable”
•Wait
for p ® n while that nucleus just “sits around”
•The
net effect is still 4 1H ®
4He
•C
just acts like a “catalyst”
From our text: Horizons, by Sees
