Indium nuclear properties

Table III containing the nuclear properties for Group III isotopes shows both isotopes of In to be in the high-Q category, accounting for the fact that few indium spectra have been reported. Those that have been observed all represent environments in which In experiences a relatively low electric field gradient. Some relief from the high-Q syndrome is obtained if the nucleus, like In, also has high spin. The value of the spin factor in the relaxation equation is inversely proportional to I and varies by a factor of 18 between I = 3/2 and I = 9/2.

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