Adds a nuclear spin to a spin system.

NewSys = nucspinadd(Sys,Nuc,A)
NewSys = nucspinadd(Sys,Nuc,A,Apa)
NewSys = nucspinadd(Sys,Nuc,A,Apa,Q)
NewSys = nucspinadd(Sys,Nuc,A,Apa,Q,Qpa)

This function adds the isotope specified in Nuc to the spin system structure given in Sys. A is a vector containing the hyperfine principal values, Q contains the quadrupole principal values. Apa and Qpa contain the tilt angles for the respective tensors. See the page on spin system structures.

If a parameter is [], it is set to [0 0 0]. The default values for missing parameters (Apa, Q and Qpa) is [].

The following two lines defines a system of an electron spin coupled to a Cu and a N nucleus.

Sys = struct('S',1/2,'g',[2 2 2.2]);
Sys = nucspinadd(Sys,'63Cu',[50 50 520]);
Sys = nucspinadd(Sys,'14N',[3 3 9],[],[-1 -1 2]);

Note that the above is more convenient than the manual construction

Sys = struct('S',1/2,'g',[2 2 2.2],'Nucs','63Cu,14N');
Sys.A = [50 50 520; 3 3 9]);
Sys.Q = [0 0 0; -1 -1 2]);

since a nucleus can be included and excluded just by adding or removing a line.

spin system structures, nucspinrmv