ConstantID

Triton g factor

Atomic & nuclearMeasured

gt = 5.957 924 930(12)

Value
5.957 924 930
Standard uncertainty
1.2 × 10−8
Relative uncertainty
2.0 × 10−9 (2 parts per billion)
Status
Measured
Symbol
gt
Source
CODATA 2022 via NIST · NIST entry

Use in a calculation

# triton g factor, CODATA 2022 (NIST)
triton_g_factor = 5.95792493  # standard uncertainty 1.2e-8

# SciPy: scipy.constants.physical_constants['triton g factor']

What it is

The g-factor of the triton, the nucleus of tritium (one proton and two neutrons): the pure number that relates its magnetic moment to its spin angular momentum. A negative value means the moment points opposite to the spin.

How the value changed, 1998–2022

Each point is one CODATA adjustment, plotted as its difference from the 2022 value; the bars show one standard uncertainty (an arrowhead means the bar runs off the chart).

triton g factor: CODATA values 1998–2022 relative to the 2022 value, in parts per billion, with one-standard-uncertainty bars−10−50+5+10parts per billion1998200220062010201420182022

Relative uncertainty

triton g factor: relative standard uncertainty in each CODATA adjustment, logarithmic scale10⁻⁹10⁻⁸10⁻⁷1998200220062010201420182022
CODATAValue (uncertainty)Relative uncertaintyChange from previous
20225.957 924 930(12)2.0 × 10−9 −0.1 σ of 2018
20185.957 924 931(12)2.0 × 10−9 +0.4 σ of 2014
20145.957 924 920(28)4.7 × 10−9 +0.3 σ of 2010
20105.957 924 896(76)1.3 × 10−8 +0.0 σ of 2006
20065.957 924 896(76)1.3 × 10−8

“Change from previous” is the shift in the value divided by the standard uncertainty of the previous adjustment. Earlier values are converted into the current unit where NIST changed it (for example J s to J Hz⁻¹).

Related constants

Atomic & nuclear mt/me Triton-electron mass ratio 5496.921 535 51(21) Atomic & nuclear μt Triton magnetic moment 1.504 609 5178(30) × 10−26 J T−1 Atomic & nuclear μt/μB Triton magnetic moment to Bohr magneton ratio 1.622 393 6648(32) × 10−3 Atomic & nuclear μt/μN Triton magnetic moment to nuclear magneton ratio 2.978 962 4650(59) Atomic & nuclear mt Triton mass 5.007 356 7512(16) × 10−27 kg Atomic & nuclear mtc2 Triton mass energy equivalent 4.500 387 8119(14) × 10−10 J Atomic & nuclear mtc2 Triton mass energy equivalent in MeV 2808.921 136 68(88) MeV Atomic & nuclear mt Triton mass in u 3.015 500 715 97(10) u