Nuclear magnetic relaxation in a liquid determined by intermolecular nuclear spin interactions

1967 ◽  
Vol 7 (6) ◽  
pp. 783-790 ◽  
Author(s):  
R. M. Yul'met'ev

1974 ◽  
Vol 52 (5) ◽  
pp. 387-395 ◽  
Author(s):  
B. C. Sanctuary

For symmetric top molecules the role of nuclear spin symmetry is included in the derivation of the nuclear magnetic relaxation rate. It is assumed that this is dominated by a spin-rotation mechanism. Of the three nuclear spin species which exist for ZX3Y' symmetric tops, it is found that the "zero frequency" K = −1 to +1 term results in two of the species relaxing with a different rate from the third. The difference, which allows a direct NMR evaluation of the relative values of [Formula: see text] and [Formula: see text], is enhanced at low temperatures.





1973 ◽  
Vol 51 (23) ◽  
pp. 2488-2494 ◽  
Author(s):  
B. C. Sanctuary

By use of a nuclear quadrupole intramolecular mechanism, expressions are obtained for the relaxation rates for both ortho and para X2 molecules which have nuclear spins I1 > 1/2. It is found, except for I1 = 1, that as a result of the nuclear spin weightings the two species relax with different rates, even at temperatures high enough so that the rotational averages are approximately equal.



Physica ◽  
1954 ◽  
Vol 3 (7-12) ◽  
pp. 1130-1133
Author(s):  
N BLOEMBERGEN


1978 ◽  
Vol 39 (C6) ◽  
pp. C6-115-C6-116 ◽  
Author(s):  
S. Maegawa ◽  
T. Mizusaki ◽  
Y. Hirayochi ◽  
T. Kusumoto ◽  
A. Hirai


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