The Spin Hamiltonian

We can consider the spin interactions being described by a Hamiltonian operator which is a sum of terms, each of them describing a contribution due to an isolated effect:

(3.1)

In this section we are going to discuss the most importants of these terms, their origin and their effect on the NMR response (spectrum, relaxation rates, ...).

• The Zeeman Interaction
• The Quadrupolar Interaction
• The Knight Shift