- Magnetic Susceptibilities
Magnetic Susceptibilities
We have seen that an assembly of nuclear magnets in a steady magnetic field absorbs power from a suitably applied RF field.
We know from basic E&M theory (macroscopic formulation of Maxwell's equations) that absorption is associated with the imaginary part of the susceptibility . In our case, is the complex nuclear magnetic susceptibility, where is the real part and is associated with dispersion while is the imaginary part and is associated with absorption.
We will first derive the static (no transverse RF field) magnetic susceptibility .