The triple alpha processTerm used to describe the addition of a helium nucleus (4He) to existing nuclei with in a giant star to form heavier elements. At temperatures above 2 x 108 K, a 12C nucleus colliding with 4He nucleus can produce 16O. Although the 16O produced may fuse with other 16O nuclei Click on Term to Read More. This is the main source of energy production in red giants and red supergiants.
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