Nuclear magneton explained

The value of nuclear magneton! System of units !! Value

SI
Gaussian	^[1]
eV	^[2]
MHz/T (per h)	^[3]

The nuclear magneton (symbol) is a physical constant of magnetic moment, defined in SI units by:$$\backslash mu\_\backslash text\; =$$and in Gaussian CGS units by:$$\backslash mu\_\backslash text\; =$$where:

• is the elementary charge,
• is the reduced Planck constant,
• is the proton rest mass, and
• is the speed of light

Its CODATA recommended value is: In Gaussian CGS units, its value can be given in convenient units as

The nuclear magneton is the natural unit for expressing magnetic dipole moments of heavy particles such as nucleons and atomic nuclei.

Due to neutrons and protons having internal structure and not being Dirac particles, their magnetic moments differ from :

μ =  μ

μ =  μ

The magnetic dipole moment of the electron, which is much larger as a consequence of much larger charge-to-mass ratio, is usually expressed in units of the Bohr magneton, which is calculated in the same fashion using the electron mass. The result is larger than by a factor equal to the proton-to-electron mass ratio, about 1836.

See also

• Nucleon magnetic moment

External links

• Web site: Nuclear magneton . . 2014 . CODATA recommended value. .
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Notes and References

1. Since the 2019 redefinition of the SI base units, the Gauss is no longer exactly corresponds to 10 T.
2. Web site: 2022 CODATA Value: nuclear magneton in eV/T . . 2022.
3. Web site: 2022 CODATA Value: nuclear magneton in MHz/T: μ/h . . 2022.