This is the model for 2-site fast exchange for R1ρ-type data. It is selected by setting the model to `DPL94', here named after Davis et al. (1994). It extends the Meiboom (1961) model to off-resonance data. The model collapses to the M61 model for on-resonance data. The equation for the exchange process is
|R1ρ = R1cos2θ + R1ρ' + sin2θ,||(11.75)|
where θ is the rotating frame tilt angle. The reference for this equation is:
More information about the DPL94 model is available from:
The relax user manual (PDF), created 2016-10-28.