Energy Sources in Stars (§10.3)
Energy Sources in Stars (§10.3)
Energy Sources in Stars (§10.3)
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Proton-Proton Cha<strong>in</strong>: Summaryp + + p + " 1 2 H + e + + # e21H + p + " 3 2He + $69% 31%32He + 3 2He " 4 2He + 2p + 3 2He + 4 2He " 7 4Be + #!(PPI) 99.7% 0.3%!!7 4Be + e " # 7 3Li + $ e!7 Li + p + # 2 4 2He3Fraction of He 4 produced(PPII)1.00.50PPI!PPII7 4Be + p + " 8 5B + #85B " 8 4Be + e + + $ e84Be " 2 4 2He(PPIII)PPIII0 10 20 30 40T (10 6 )K)
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