Fit;o): A Mössbauer spectrum fitting program

Jari í Hjøllum, Morten Bo Madsen

Research output: Contribution to journalArticle


Fit;o) is a Mössbauer fitting and analysis program written in Borland Delphi. It has a complete graphical user interface that allows all actions to be carried out via mouse clicks or key shortcut operations in a WYSIWYG fashion. The program does not perform complete transmission integrals, and will therefore not be suited for a complete analysis of all types of Mössbauer spectra and e.g. low temperature spectra of ferrous silicates. Instead, the program is intended for application on complex spectra resulting from typical mineral samples, in which many phases and different crystallite sizes are often present at the same time. The program provides the opportunity to fit the spectra with Gaussian, Lorentzian, Split-Lorentzian, Pseudo-Voigt, Pseudo-Lorentz and Pearson-VII line profiles for individual components of the spectra. This feature is particularly useful when the sample contains components, that are affected by effects of either relaxation or interaction among particles. Fitted spectra may be printed, fits saved, data files exported for graph creation in other programs, and analysis tables and reports may be exported as plain text or LaTeX files. With Fit;o) even an inexperienced user will soon be able to analyze and fit relatively complex Mössbauer spectra of mineralogical samples quickly without programming knowledge.
Original languageEnglish
Article number0912.0449
Publication statusPublished - 2 Dec 2009


  • Computational Physics
  • Data Analysis
  • Statistics
  • Probability
  • Mössbauer
  • fitting
  • iron
  • isomer
  • quadrupole
  • nuclear
  • ferrous
  • gaussian
  • Lorentzian
  • Split-Lorentzian
  • Pseudo-Voigt
  • Pseudo-Lorentz
  • Pearson-VII
  • spectra
  • line profiles


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