NMR Nuclear spin and resonance

Fi) urc 2.1. A nucleus cairies charge and when spinning possesses a magnelie moment. ii. 

Isotope Natural abundance (%) NMR frequency (MHz) Relative sensitivity 

Frequencies are given for a 400 MHz spectrometer (9.4 T magnet) and sensitivities are given relative to proton observation and include terms for both intrinsic sensitivity of the nucleus and its natural abundance. 

Properties of quadrupolar nuclei are given in Table 2.3 below. 

Now consider a collection of similar spin-Va nuclei in the applied static field. As stated, the orientation parallel to the applied field, a, has slightly lower energy than the anti-parallel orientation, p, so at equilibrium there will be an excess of nuclei in the a state as defined by the Boltzmann distribution  

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