23Na natural abundance studies

Quadrupolar nuclei, i.e., those with a nuclear spin quantum number 7 greater than or equal to one, outnumber their spin-1/2 counterparts by a factor of roughly 3 1 and are critically important in the study of many solid materials. For example, nB (spin 7 = 3/2, 80% natural abundance), 14N (7=1, 99.6%), 23Na (7 = 3/2, 100%), 170 (7 = 5/2, 0.04%) and 27A1 (7 = 5/2,100%) comprise some of the most important atomic nuclei in chemistry, materials science, and biology. As is well... 

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