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Coulomb barrier
1. The electrostatic forces within the high potential energy region of a nucleus which prevents positively charged particles from reaching the nucleus of an atom.
2. Reactions between atomic nuclei are inhibited by the need for the nuclei to overcome the repulsive force that acts between any pair of similarly charged particles.

At high temperatures, nuclei move sufficiently fast to be able to overcome the Coulomb barrier.

The greater the nuclear charge, the higher is the temperature that is required for nuclear reactions to occur.

This entry is located in the following unit: coulomb + (page 1)