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This is the original Luz and Meiboom 1963 relaxation dispersion model for 2-site fast exchange for SQ CPMG-type data. This model is labelled as LM63 in elax.


The LM63 model has the parameters {R20, ..., Φex, kex}.


The reference for the LM63 model is:

  • Luz, Z. and Meiboom, S. (1963). Nuclear magnetic resonance study of protolysis of trimethylammonium ion in aqueous solution - order of reaction with respect to solvent. J. Chem. Phys., 39(2), 366-370. (DOI: 10.1063/1.1734254)


The implementation of the LM63 model in relax can be seen in the:

See also