The Meiboom 1961 2-site on-resonance fast exchange relaxation dispersion model for [[R1rho-type data]]. This model is labelled as '''M61''' in relax.
== Equation ==
<math>
\mathrm{R}_{1\rho}= \mathrm{R}_1\cos^2\theta + \left( \mathrm{R}_{1\rho}{´} + \frac{\Phi_\textrm{ex} \textrm{k}_\textrm{ex}}{\textrm{k}_\textrm{ex}^2 + \omega_\textrm{e}^2} \right)
</math>
== Parameters ==