Electron Paramagnetic Resonance Formula

Equation for calculate electron paramagnetic resonance is,

E = ± (1 / 2) × g_e × μ_B × B₀

where,
g_e - electron's g-factor = 2.0023 for the free electron
μ_B - is the Bohr magneton constant
B₀ - resonance occurs at a magnetic field
E - magnetic potential energy of electron spin in magnetic field