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coulomb barrier
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Coulomb barrier
The
Coulomb barrier
, named after
Coulomb's law
, which is named after physicist
Charles-Augustin de Coulomb
(1736–1806), is the energy barrier due to
electrostatic
interaction that two nuclei need to overcome so they can get close enough to undergo a
nuclear reaction
. This energy barrier is given by the
electrostatic potential energy
:
where
k
is the Coulomb's constant = 8.9876×10
9
N m² C
-2
;
e
0
is the
permittivity of free space
;
q
1
,
q
2
are the charges of the interacting particles;
r
is the interaction radius.
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