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Name |
Bohr Magneton |
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Equation |
μ
B
=
e
h
2
m
e
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Definition of terms |
μB = Bohr magneton, e = elementary charge, h = Dirac's constant, me = mass of electron |
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Comments |
The Bohr magneton is a measure of magnetic dipole moment.
It is derived in the Bohr model of the atom where the angular momentum of an electron orbiting a nucleus corresponds to a current loop, which thus has a magnetic dipole moment equal to the Bohr magneton. This is not a physical model as there is also a contribution from the intrinsic angular momentum (or spin) of an electron.
The magnetic moment of any system can be considered as g times the Bohr magneton, where g is known as the Landé g -factor of the system. |
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References
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An Introduction to Quantum Mechanics, A P French, E F Taylor, Stanley Thornes Ltd, 1978 |
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