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Definition of: proton-proton reaction

(prō′ton·prō′ton)
A thermonuclear chain reaction which is assumed to provide stellar energy by means of the fusion of 4 protons to make a helium nucleus, with a residue of 2 protons returned to the cycle. Compare CARBON CYCLE.

Phrases starting with the letter: A B C D E F G H I J K L M N O P Q R S T U V W X Y Z

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