Search found 9 matches

by JuliaL
Sat Jan 09, 2016 3:43 pm
Forum: General forum
Topic: Numbering of separate transitions
Replies: 1
Views: 1868

Numbering of separate transitions

Hello! Using pepper, I'm simulating the separate transitions of one spin 1/2 and one spin 3/2: Sys.S = [1/2; 3/2]; Sys.g = [8; 2]; Sys.ee = 0; Exp = struct('Range', [1, 1000], 'mwFreq', 9.7601, 'Harmonic', 0); Opt.Output = 'separate'; [x,y,tr] = pepper(Sys,Exp,Opt); There are 10 transitions shown in...
by JuliaL
Tue Jun 02, 2015 8:40 am
Forum: General forum
Topic: saffron: identical vs. no orientations of A and g
Replies: 7
Views: 4943

Re: saffron: identical vs. no orientations of A and g

My sample is a frozen solution. By "very general fashion" do you mean, that the documentation only describes the single crystal case and, in contrast, for a powder spectrum/sample Apa is given in the g frame? Or is Apa always given in the g frame and the documentation is wrong? That's what...
by JuliaL
Tue Jun 02, 2015 6:03 am
Forum: General forum
Topic: saffron: identical vs. no orientations of A and g
Replies: 7
Views: 4943

Re: saffron: identical vs. no orientations of A and g

Hi Matt, thanks for the fast answer! ...don't know if we are talking about the same thing, here.*hm* I don't want to shift Apa vs. gpa at this point. Quoting the EasySpin homepage, Apa and gpa both refer to the molecular frame, so setting gpa=Apa means g and A should be co-linear. And if I change Ap...
by JuliaL
Mon Jun 01, 2015 12:12 pm
Forum: General forum
Topic: saffron: identical vs. no orientations of A and g
Replies: 7
Views: 4943

saffron: identical vs. no orientations of A and g

Hello! I have one electron, hyperfine coupled to one deuteron, i.e. g tensor, A tensor and their respective orientations gpa and Apa. I want to simulate HYSCORE powder spectra at different field positions. As far as I know, if g and A have the same orientation (Apa = gpa), I should get the same resu...
by JuliaL
Tue Nov 18, 2014 12:39 pm
Forum: General forum
Topic: problems with saffron and orientation selection
Replies: 7
Views: 6862

Re: problems with saffron and orientation selection

Found a missing sign in my second to last post but that wasn't the problem in the first place. I don't know why it works know, I didn't change anything. :roll: But MatLab messes with my stuff from time to time, anyways. Thanks again for the effort, thanks for the explanation of how eulang works! Nex...
by JuliaL
Mon Nov 17, 2014 1:38 pm
Forum: General forum
Topic: problems with saffron and orientation selection
Replies: 7
Views: 6862

Re: problems with saffron and orientation selection

I get the same.

Concerning your first answer: Hy_A_eu = [Hy_A_phi, Hy_A_theta, Hy_A_psi]; is commented, you just show the results by eulang. Which value do you have for Hy_A_psi?
by JuliaL
Mon Nov 17, 2014 7:06 am
Forum: Bugs
Topic: Saffron g-Tensor
Replies: 1
Views: 3515

Saffron g-Tensor

I want to reproduce some older simulations and don't know how EasySpin is internally processing g/A and gpa/Apa. Therefore I want to calculate the orientations on my own and hand over 3x3 g and A matrices to saffron. But it doesn't not except full g matrices. Please find the working example below. -...
by JuliaL
Mon Nov 17, 2014 6:12 am
Forum: General forum
Topic: problems with saffron and orientation selection
Replies: 7
Views: 6862

Re: problems with saffron and orientation selection

Hallo Stefan,

thanks for the answer!
I don't know why, but for me the switch seems essential. Without:

Code: Select all

Hy_A_eu = 0.3013    2.2523    2.3562
eulang: Rotation matrix is not orthogonal within 1e-6.
Hy_A_eulang = 0.3040    2.2492    0.7852
math_A_eu = 0.3013    2.2524    0.7854
by JuliaL
Wed Oct 29, 2014 3:48 pm
Forum: General forum
Topic: problems with saffron and orientation selection
Replies: 7
Views: 6862

problems with saffron and orientation selection

Hello, I want to do orientation selective HYSCORE simulations using saffron and actually it's two problems I'm encountering... 1) The first one concerns the definition of atan2 in comparison to eulang. Below the text please find a set of parameters (first two sections) for an electron and a 2H nucle...