The TP02 2-site exchange R_1ρ model

This is the model for 2-site exchange for off-resonance R_1ρ-type data from Trott and Palmer (2002). It is selected by setting the model to `TP02'. The equation for the exchange process is

$${\frac{{\sin^2\theta p_{\textrm{A}}p_{\textrm{B}}\Delta\omega ^2\... ...omega_{\textrm{Beff}}^2/\omega_{\textrm{eff}}^2 + \textrm{k}_{\textrm{ex}}^2}}}$$ (11.76)

in which

The equation is accurate only when populations are highly skewed with p_A $\gg$ p_B. And it is valid only for exchange processes which are not fast. Note that this model has been superseded by the `TAP03' and `MP05' models. The reference for this equation is:

• Trott and Palmer (2002)

More information about the TP02 model is available from:

• the relax wiki at http://wiki.nmr-relax.com/TP02,
• the API documentation at http://www.nmr-relax.com/api/3.2/lib.dispersion.tp02-module.html,
• the relaxation dispersion page of the relax website at http://www.nmr-relax.com/analyses/relaxation_dispersion.html#TP02.