View source for NS CPMG 2-site 3D full

= Intro =
The relaxation dispersion model for the numeric solution (NS) to the Bloch-McConnell equations for [[SQ CPMG-type data]] using 3D magnetisation vectors.  The model is labelled as '''NS CPMG 2-site 3D full''' in [[Relaxation dispersion citation for relax|relax]].

== Parameters ==

The NS CPMG 2-site 3D full model has the parameters {$R_{2A}^0$, $R_{2B}^0$, $...$, $p_A$, $\Delta\omega$, $k_{ex}$}.

== Code ==

The library code.<br>
http://svn.gna.org/viewcvs/*checkout*/relax/trunk/lib/dispersion/ns_cpmg_2site_3d.py?revision=HEAD

== References ==

The function uses an explicit matrix that contains relaxation, exchange and chemical shift terms.  It does the 180deg pulses in the CPMG train.  The approach of Bloch-McConnell can be found in chapter 3.1 of Palmer, A. G. Chem Rev 2004, 104, 3623-3640.  This function was written, initially in MATLAB, in 2010.

This is the model of the numerical solution for the 2-site Bloch-McConnell equations.  It originates as optimization function number 1 from the fitting_main_kex.py script from Mathilde Lescanne, Paul Schanda, and Dominique Marion (see U{http://thread.gmane.org/gmane.science.nmr.relax.devel/4138}, U{https://gna.org/task/?7712#comment2} and U{https://gna.org/support/download.php?file_id=18262}).

== Related models ==

The [[NS CPMG 2-site 3D]] model is a parametric restriction of this model.

== Links ==

The [[Relaxation dispersion citation for relax|implementation of the NS CPMG 2-site 3D full model in relax]] can be seen in the:
* [http://www.nmr-relax.com/manual/full_NS_2_site_3D_CPMG_model.html relax manual], 
* [http://www.nmr-relax.com/api/3.1/lib.dispersion.ns_cpmg_2site_3d-module.html API documentation],
* [http://www.nmr-relax.com/analyses/relaxation_dispersion.html#NS_CPMG_2-site_3D_full relaxation dispersion page of the relax website].

== See also ==
[[Category:Relaxation_dispersion]]