This is the second model for 2-site fast exchange for on-resonance R1ρ-type data from Meiboom (1961). It is selected by setting the model to `M61 skew'. The equation for the exchange process is
|R1ρ = R1ρ' + .||(11.74)|
Care must be taken as this model appears to have infinite lines of solutions - pA and Δω are convoluted. Hence this model is disabled in the dispersion auto-analysis.
More information about the M61 skew model is available from: