EasySpin forum

Hello!

I wanted to ask if it is possible to fit only a certain field range of a CW EPR spectrum using esfit? For example, experimental range is [0 400] mT, but I just want to fit [300 350] mT. When I try to pass an incomplete range to esfit, some artifacts appear in the simulated spectra.

Is there any way to solve this problem? Remeasuring in a desired range is not an option for me.

Thank you!

The artifacts appear as the simulated spectra is broader than the chosen range.
This is independent of your measurement.

You might write your own fit function which simulates a larger range, like [0 400], but return only [300 350]. Take care that the number of points is identical for both experiment and fit.