SpinDynamics.org User Support Forum

We have tried to use the latest version of Spinach and seen that it now requires some ML toolboxes. How foolish would it be to revert the corresponding error statement in existentials to a simple warning, considering that we will still be running the usual simulations of spatially encoded NMR?

Thanks for your quick & elaborate response. Regarding the first question, thanks, I'll figure out which operator combination to use for the central transition\ satellite transitions. Regarding the normalization, yes, I understand that it's dependent on the system size. The folks in the paper use...

I am trying to simulate in Spinach a simple multi-pulse sequence, steady-state free precession (SSFP), in solid state nmr in the presence of a quadrupolar interaction and T1 & T2 relaxation. My first question is how can I detect different SQC: I want to differentiate between the central transiti...

I am simulating basic sequences for NMR using ideal RF pulses. Spinach documentation is quite well written however I am not sure if I uderstood these two concepts correctly: 1) Phase for RF pulses: Example - 90 degree excitation pulse: rho=step(spin_system,cosd(phase)*Lx+sind(phase)*Ly,parameters.rh...

I have a question about the state representation in spinach. First, let me start by thanking you, it is a great tool. We are using it for simulating an experiment that we are implementing and it is incredibly helpful. We are using sphten-liouv basis for a 3-spin system. The state is an array with 64...

Thanks, the repeated simulation for the gradients is how I do it now.
I did not see the shaped pulse example earlier.
That is wonderful, with this example I can set up my own pulses.
Thank you for all your help.

Thanks for the explanation. Unfortunately, some of the spin systems that I work with are like the one in the example, so there is nothing I can really do to speed that up. If there are equivalent spins I do include that, which definitely helps. On a related note, are there any ‘modules’ available (o...

I am using it a lot and have integrated it with my own Matlab code to simulate spectra for metabolomics. In general the simulations are very fast, which is one of the primary reasons I like to use your code over my own, much slower, density matrix-based code. However, occasionally I encounter a spin...

Is there an example for simualting nuclear overhauser effect? Thanks.

Thank you very much for your reply! Let me make sure I understand it right first. 1. I am trying to see spin locking effects on the singlet states. So for example after the M2S sequence I need to quench the chemical shift difference so that no leakage happens from the singlet to the triplet due to t...