The proportionahty constant y is called the gyromagnetic ratio which is a function of the magnitude of the nuclear magnetic moment. Therefore each isotope having a net nuclear spia possesses a unique y. The y of some biologically relevant nuclei can be found ia Table 3. [Pg.53]

If the primary isotopic effect is neglected, very accurate values may be obtained for the gyromagnetic constant ratio y("7Sn)/y(119Sn) [equation (10)1 from the ratio of the tin resonance frequencies, vTMs(U7Sn)/vTMs(U9Sn)- The ratios of resonance frequencies measured for pairs of tin isotopes with different accuracies by various authors are compared in Table XIV. [Pg.318]

Shapiro s data for formaldehyde (Table 16) are quite limited, but clearly show a solvent induced decrease for VH D (which is multiplied by the ratio of the gyromagnetic constants of H and D to yield the H—H coupling) going from TMS to acetonitrile. [Pg.150]

This nuclear magnetic moment fl is represented by a vector that is colinear to I and has the same or opposite direction depending on the sign of 7, the gyromagnetic ratio (also called the gyromagnetic constant). [Pg.129]

The angular momentum L has associated with it a magnetic moment /z. Both are vector quantities and they are proportional to each other. The proportionality factor y is a constant for each nuclide (i.e. each isotope of each element) and is called the gyromagnetic ratio, or sometimes the magnetogyric ratio. The detection sensitivity of a nuclide in the NMR experiment depends on y nuclides with a large value of y are said to be sensitive (i.e. easy to observe), while those with a small y are said to be insensitive. [Pg.87]

See also in sourсe #XX -- [ Pg.395 ]

See also in sourсe #XX -- [ Pg.329 ]

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