Search found 134 matches

by Matt Krzyaniak
Sat Jan 27, 2024 10:16 pm
Forum: General forum
Topic: Meaning of 'coupled' initState for triplet-pair
Replies: 1
Views: 665

Re: Meaning of 'coupled' initState for triplet-pair

The coupled basis is meant for coupled spins. How this works in terms of singlet fission: in principle initially only the 1(TT) state is populated, so you would use sys.initState = {[0,0,0,0,0,0,0,0,1],'coupled'}; . Due to the zerofield interaction of the two triplets, their dipolar coupling, and th...
by Matt Krzyaniak
Fri Dec 08, 2023 6:35 pm
Forum: General forum
Topic: Simulation from ORCA calculation
Replies: 2
Views: 9638

Re: Simulation from ORCA calculation

Well you have a couple problems, but the main one is that ultimately the problem is just too big for Matlab and Easyspin to handle. So how can you fix that: Estimate your linewidth, and remove all of the nuclei that fall below that, you can do that when you import the .prop file. Remove the (majorit...
by Matt Krzyaniak
Mon Jul 17, 2023 10:09 am
Forum: General forum
Topic: Version 6XX
Replies: 1
Views: 957

Re: Version 6XX

in ES6.0.* you should use:
esfit(spc,@pepper,{Sys,Exp},{vary},{SimOpt,FitOpt})

by Matt Krzyaniak
Thu May 11, 2023 7:01 am
Forum: Bugs
Topic: EasySpin expired
Replies: 7
Views: 12275

Re: EasySpin expired

6.0.x is perfectly stable.

by Matt Krzyaniak
Tue Apr 04, 2023 6:25 am
Forum: General forum
Topic: Isotropic impurity at g=1.7
Replies: 2
Views: 3231

Re: Isotropic impurity at g=1.7

If you are in a quartz EPR tube(particularly one that you flame sealed yourself), or mounted on a quartz rod, my best guess would be a quartz radical defect. Though g=1.7 is a bit low, I thought it should be closer to g=1.9, so it could be a result of sample position or field/frequency mis-calibrati...
by Matt Krzyaniak
Fri Feb 24, 2023 9:22 pm
Forum: Bugs
Topic: Calculated spectrum is 0 for narrow range
Replies: 4
Views: 12770

Re: Calculated spectrum is 0 for narrow range

This is problem with the number of orientations, using the default number of nKnots or GridSize there are effectively no transitions in the chosen range. Increase that value and your reduced range and overall spectrum will look considerably better.

by Matt Krzyaniak
Wed Jan 25, 2023 8:28 am
Forum: Bugs
Topic: Pepper fitting with esfit has bad edges/boundaries
Replies: 3
Views: 6120

Re: Pepper fitting with esfit has bad edges/boundaries

This is an artifact from the inclusion of the field modulation and the extremely narrow sweep range. You can think of the field modulation as an additional linewidth which the spectrum is convoluted with, as such if it is non-zero at the edges you're likely to get weird artifacts. So in your case, a...
by Matt Krzyaniak
Tue Jan 10, 2023 9:07 am
Forum: General forum
Topic: esfit autoscale question
Replies: 1
Views: 1939

Re: esfit autoscale question

The Autoscale checkbox is just a scale factor, obtained through simple linear regression. While the BaseLine menu emulates options given in previous versions and includes polynomial coefficients in that linear regression. In previous version, those two options were folded together into a single drop...
by Matt Krzyaniak
Tue Jan 10, 2023 8:52 am
Forum: General forum
Topic: EasySpin expiration
Replies: 3
Views: 2066

Re: EasySpin expiration

I can't recall if there is a specific workaround, but you should probably upgrade to the newest version and that will no longer be a problem. Typically, in the 5.2.x versions, updates fix major bugs and problems and don't change input nor behavior. The latest and greatest is obviously the developmen...
by Matt Krzyaniak
Tue Nov 15, 2022 9:26 am
Forum: General forum
Topic: How to read property.text file using orca2easyspin;hydroxyl spectrum
Replies: 5
Views: 4910

Re: How to read property.text file using orca2easyspin;hydroxyl spectrum

If there is some sort of pathing issue you could try:

Code: Select all

[filename,pathname] = uigetfile('*.*');
 Sys = orca2easyspin(fullfile(pathname,filename));