[Ifeffit] alpha and σ2 values for EXAFS data fitting in Artemis came negative

4 Jun 2024


      Hello Everyone,
 During one of the data fittings in Artemis, alpha and σ2 came negative!!!
What is/are the reason/s behind it?
The corresponding file is attached...
  Regards,
Arpita Nandy, PhD student
Saha Institute of Nuclear Physics, India