Electron Spin
Resonance Spectroscopy
ESR
ESR
•A magnetic field splits the MS = ±1/2 spin states into two energy levels, separated by.
Because of the difference
in mass of p+ and e-, a given field B will
•split the electron states about 2000-fold further than the proton states.
Since the signal intensity of
magnetic resonance
techniques is directly
proportional to the
difference in the two
populations, EPR is
intrinsically more sensitive
Than NMR (other things
being equal).