w = 2pn Þ wo = g Bo (radians)
Precession or Larmor frequency:
l
angular
momentum (l)
Simply, the nuclei spins about
its
axis creating a magnetic moment m
Classical
View of NMR
(compared
to Quantum view)
Maxwell: Magnetic field
Moving charge
≡
Bo
wo
m
Apply a large external field (Bo)
and m
will precess about Bo at its
Larmor (w) frequency.
Important: This is
the same frequency obtained from the
energy transition between
quantum states
