Search found 6 matches

by ninowili
Mon Apr 07, 2025 2:11 am
Forum: General forum
Topic: Question about hyperfine coupling..
Replies: 2
Views: 530

Re: Question about hyperfine coupling..

Note that this has nothing to do with EPR vs. NMR. For example, if a proton couples to one deuterium nucleus, you also get a 1:1:1 triplet.

by ninowili
Fri Feb 28, 2025 1:37 am
Forum: General forum
Topic: Temperature Dependent Simulations using garlic
Replies: 7
Views: 30867

Re: Temperature Dependent Simulations using garlic

I've also used pepper but I'm not seeing any difference in my signal if I set the Sys.S to [0.5 0.5] vs Sys.S to 1.

that is expected if the g-values and all the couplings are the same.

by ninowili
Wed Feb 26, 2025 3:19 am
Forum: General forum
Topic: No echos from isotropic system in saffron
Replies: 5
Views: 23517

Re: No echos from isotropic system in saffron

But that is how an echo forms. Each spin packet evolves with one frequency, and the some of frequencies appears as a decay. After the pi pulse, the packets "evolve backwards"/change place, which leads to constructive interference, i.e. the echo. When discussing inhomogeneous/anisotropic in...
by ninowili
Thu Feb 20, 2025 5:59 am
Forum: General forum
Topic: No echos from isotropic system in saffron
Replies: 5
Views: 23517

Re: No echos from isotropic system in saffron

I think it might make sense as a feature request to include a simple gaussian offset-broadening or so in saffron calculations. I assume it ignores g-strain if you say it has no effect. You can always to it "by hand". ie generate a gaussian distribution of g-values or offsets, calculate the...
by ninowili
Tue Feb 18, 2025 6:08 am
Forum: General forum
Topic: No echos from isotropic system in saffron
Replies: 5
Views: 23517

Re: No echos from isotropic system in saffron

If there is only a single frequency no decay and thus no echo is expected. When exactly on resonance the FID and echo have a frequency of 0. There is thus no evolution in this particular rotating frame.

I assume saffron ignores "Sys.lwpp".

by ninowili
Fri Oct 13, 2023 5:53 am
Forum: General forum
Topic: explicit A-matrix for saffron ENDOR simulations
Replies: 4
Views: 12325

Re: explicit A-matrix for saffron ENDOR simulations

If I see it correctly, when you do it explicitly, you include the g-anisotropy. You don't do that for the "implicit" calculations. is that correct?