This is the model for 2-site exchange on all times scales (with the constraint that
pA pB), named after Ishima and Torchia (1999).
It is selected by setting the model to `IT99'.
The equation is:
Rex | (11.30) | |
ωa2 | = |
(11.31) |
R2eff | = R20 + Rex. | (11.32) |
The effective rotating frame field for a CPMG-type experiment is given by
ω1eff = 4 |
(11.33) |
and hence
ω1eff4 = 2304νCPMG4. | (11.34) |
The reference for this equation is:
More information about the IT99 model is available from:
The relax user manual (PDF), created 2024-06-08.