What specific process creates carbon from helium nuclei in stars like the Sun during the red giant phase?

Answer

The triple-alpha process

When hydrogen fuel is exhausted, helium fusion begins. The triple-alpha process specifically fuses three helium nuclei (alpha particles) together to create one nucleus of carbon.

What specific process creates carbon from helium nuclei in stars like the Sun during the red giant phase?
ElementastronomystarFusionnucleosynthesis