Search found 1044 matches

by Stefan Stoll
Sat Sep 02, 2023 11:07 pm
Forum: General forum
Topic: How to fit part of the EPR spectrum
Replies: 1
Views: 4251

Re: How to fit part of the EPR spectrum

It definitely looks like the signal around 3400 G is a major component of your sample, so it is important to identify its origin.

To just simulate the low-field part by itself, extract it from your experimental spectrum, and then adjust the field range for the simulation accordingly.

by Stefan Stoll
Wed May 10, 2023 11:47 am
Forum: Bugs
Topic: Easyspin version ID missing
Replies: 1
Views: 8416

Re: Easyspin version ID missing

Interesting. Where do you encounter this?

Downloading zip files from https://github.com/StollLab/EasySpin/releases gives versioned file names.

by Stefan Stoll
Wed May 10, 2023 11:45 am
Forum: Bugs
Topic: Calculated spectrum is 0 for narrow range
Replies: 4
Views: 13673

Re: Calculated spectrum is 0 for narrow range

Excellent. Quick note: if you switching over to version 6, remember to use Opt.GridSize instead of Opt.nKnots. The syntax has changed between versions 5 and 6.

by Stefan Stoll
Wed May 10, 2023 11:43 am
Forum: Bugs
Topic: New esfit does not recognize FitOpt.Baseline argument
Replies: 5
Views: 9788

Re: New esfit does not recognize FitOpt.Baseline argument

This could be a capitalization issue. Try FitOpt.BaseLine instead of FitOpt.Baseline.

by Stefan Stoll
Wed May 10, 2023 11:40 am
Forum: Bugs
Topic: EasySpin expired
Replies: 7
Views: 13139

Re: EasySpin expired

5.2.35 should expire on 29 Feb 2024. Strange that it already expired on your computer.

We strongly recommend switching to version 6. Version 5.2.x is no longer maintained except for catastrophic bugs. Once 6.0 is finalized, support for 5.2 will be terminated.

by Stefan Stoll
Wed May 10, 2023 11:34 am
Forum: General forum
Topic: Goodness of fit
Replies: 1
Views: 4001

Re: Goodness of fit

Yes - if you use esfit from version 6.

Goodness of fit is shown in the log box on the bottom right. If you call esfit without the GUI, goodness of fit is returned in the result structure.

by Stefan Stoll
Wed May 10, 2023 11:31 am
Forum: General forum
Topic: Unable load output file generated by ORCA using easyspin 6.0.0_dev.51
Replies: 4
Views: 9954

Re: Unable load output file generated by ORCA using easyspin 6.0.0_dev.51

Unfortunately, I can't read the error message.

Is the file on your path? What do you get with which hydroxyl_property.txt ?

by Stefan Stoll
Wed May 10, 2023 11:28 am
Forum: General forum
Topic: Script for mT to g-factor Conversion
Replies: 2
Views: 7539

Re: Script for mT to g-factor Conversion

Here is a complete example:

Code: Select all

clear, clc

mwFreq = 9.5245;  % GHz
B = linspace(300,400,51);  % mT
g = planck*mwFreq*1e9/bmagn./(B*1e-3);
plot(B,g,'o-')
xlabel('magnetic field (mT)')
ylabel('g value')
title(sprintf('%g GHz',mwFreq));
grid on
by Stefan Stoll
Wed May 10, 2023 11:25 am
Forum: General forum
Topic: Uncertainties calculations and reporting
Replies: 1
Views: 4086

Re: Uncertainties calculations and reporting

Thanks for posting these very useful links! Indeed, EasySpin's esfit uses the covariance matrix approach. Basically, it determines the parameter values that maximize of the likelihood function, assuming zero-mean Gaussian noise. Then, it determines the curvature around this maximum, which yields the...
by Stefan Stoll
Wed May 10, 2023 11:18 am
Forum: General forum
Topic: How to use Exp.CrystalOrientation to define the B//a.b.c axis or (100), (010), (001) crystal planes.
Replies: 2
Views: 4477

Re: How to use Exp.CrystalOrientation to define the B//a.b.c axis or (100), (010), (001) crystal planes.

What's the space group of your crystal? Check out the documentation page for frames here: https://easyspin.org/easyspin/documentation/frames.html#crystalframe This documents how the a, b and c axes are defined, and then you can use Exp.CrystalOrientation to orient the crystal such that the B field a...