EasySpin forum

Hi all,
It seems there's a convolution problem (or limitation) in pepper (EasySpin version: 6.0.0 (2024-04-01)). Basically, it sets intensity to zero for points below _6x10^-4 relative intensity. The convspec function though works properly. Please see a simple example below.

Sys.S = 1/2;
Sys.g = 2;
Sys.lw = [0 1];

Exp.mwFreq = 9.8;
Exp.Range = [300 400];
Exp.SampleFrame = [0 0 0];
Exp.MolFrame = [0 0 0];
Exp.Harmonic = 0;
Exp.nPoints = 1000;

[m,spc] = pepper(Sys,Exp);
spc = spc/max(spc);
spec = spc*0;
[~, i] = max(spc);
spec(i) = 1;
w = convspec(spec,0.1,1,0,0);
w = w/max(w);
plot(m,spc, m,w)
ylim([0 1e-3])
xlabel('Magnetic field (mT)')
legend('pepper', 'convspec')

This is in purpose. The Lorentzian lineshape is truncated in pepper for perfomance reasons. Is this truncation visible in any practically relevant situation?

It should be fixed in 6.0.1, which is available now.