Nuclear Magnetic Double Resonance Based on Strong RF Magnetic Field Induced Coupling between Spin Systems
Nuclear double resonance as introduced by Hartmann and Hahn  and later by Lurie and Slichter  is a high sensitivity technique which detects the weak NMR or NQR signal of type B nuclei via their effect on the A spin system which exhibits a strong NMR signal. The technique is based on the existence of nuclear dipole-dipole coupling between the two spin systems in a frame of reference in which the energy levels of the A and B spins are equally spaced, which makes entropy transport possible.
KeywordsSpin System Spin Lattice Relaxation Double Resonance Zero Magnetic Field Cross Relaxation
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