• 2 atoma vodika se stapaju u deuterij ( izotop vodika)
• 1 atom vodika i jedan atom helija fuzioniraju u 3 atoma helija
• 6 atoma helija (2x3 atoma) se spaja u 4 atoma helija i 2 atoma vodika

${\displaystyle 1H}$ + ${\displaystyle 1H}$ ${\displaystyle \rightarrow }$ ${\displaystyle 2D}$ + ${\displaystyle e}$⁺ + ${\displaystyle v}$_e

${\displaystyle 2D}$ + ${\displaystyle 1H}$ ${\displaystyle \rightarrow }$ ${\displaystyle 3He}$ + γ

${\displaystyle 3He}$ + ${\displaystyle 3He}$ ${\displaystyle \rightarrow }$ ${\displaystyle 4He}$ + ${\displaystyle 21He}$

• 12 atoma ugljika i jedan atom vodika se spaja u 13 atoma du?ika uz gama zra?enje;
• 13 atoma du?ika i 1 atom vodika se spaja u 13 atoma ugljik uz jedan pozitron i jedan elektron-neutrino
• 13 atoma ugljika i jedan atom vodika se spaja u 14 atoma du?ika uz gama zra?enje
• 14 atoma du?ika i jedan atom vodika se spaja u 15 atoma kisika uz gama zra?enje
• 15 atoma kisika prelazi u 15 atoma du?ika uz jedan pozitron i jedan elektron-neutrino
• 15 atoma du?ika i jedan atom vodika se spaja u 12 atoma ugljika i 4 atoma helija

${\displaystyle 12C}$ + ${\displaystyle 1H}$ ${\displaystyle \rightarrow }$ ${\displaystyle 13N}$ + γ

${\displaystyle 13N}$ ${\displaystyle \rightarrow }$ ${\displaystyle 13C}$ + ${\displaystyle e}$⁺ + ${\displaystyle v}$_e

${\displaystyle 13C}$ + ${\displaystyle 1H}$ ${\displaystyle \rightarrow }$ ${\displaystyle 14N}$ + γ

${\displaystyle 14N}$ + ${\displaystyle 1H}$ ${\displaystyle \rightarrow }$ ${\displaystyle 15O}$ + γ

${\displaystyle 15O}$ ${\displaystyle \rightarrow }$ ${\displaystyle 15N}$ + ${\displaystyle e}$⁺ + ${\displaystyle v}$_e

${\displaystyle 15N}$ + ${\displaystyle 1H}$ ${\displaystyle \rightarrow }$ ${\displaystyle 12C}$ + ${\displaystyle 4He}$