Measurement of magnetic changes

If the sample is placed in an inhomogeneous magnetic field with an axis of symmetry, such as that formed by two appropriately shaped pole pieces, a force / will be exerted on the sample where 

m is the mass of the sample, x is the mass susceptibility, H the field strength and dH/dS the field gradient. Selwood et measured the force by the 

In paramagnetic substances, the relationship between the atomic or molecular moment (ji) and the magnetic susceptibility per mole is given by the Curie-Weiss law  

There are three widely used methods for observation of continuously excited nuclear magnetic resonance. Two of the methods use variable frequency rf os- 

NUCLEI POSSESSING A MAGNETIC MOMENT FAVOURABLE TO NMR STUDIES 

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