The Coulomb barrier reference article from the English Wikipedia on 24-Jul-2004 (provided by Fixed Reference: snapshots of Wikipedia from wikipedia.org)

Coulomb barrier

The Coulomb barrier, named after Coulomb, is the electrostatic repulsion of two point charges. Overcoming the Coulomb barrier is essential for achieving nuclear fusion.

with

k = Coulomb's constant

e = charge of electron

r = separation

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