Use this simple physics calculator to compute electron paramagnetic resonance (EPR) or electron spin resonance (ESR) for your atomic calculations.
Formula:
E = ± (1 / 2) × ge × μB × B0
where,ge - electron's g-factor = 2.0023 for the free electron
μB - is the Bohr magneton constant
B0 - resonance occurs at a magnetic field
E - magnetic potential energy of electron spin in magnetic field