A quasi-continuous observation of the α-transition of Fe1+xS by Mössbauer line tracking

P. MENDOZA ZÉLIS · G. A. PASQUEVICH · A. VEIGA · M. B. FERNÁNDEZ VAN RAAP · F. H. SÁNCHEZ

HYPERFINE INTERACTIONS

Springer

Año: 2010 vol. 195 p. 161 - 165

0304-3843

Mössbauer absorption line tracking methodology, under a constant velocity strategy, is used for a quasi-continuous observation of the α-transition on slightly non stoichiometric Fe1+xS alloy. To this end, two strategies were applied: an intelligent absorption line tracking with a control algorithm that uses the data measured in the previous region to stablish the position of the next partial spectral range; and a predetermined line tracking in which temperature evolution of a partial spectral region of interest (ROI) is programmed. The latter uses results from the former, in order to achieve a quasi-continuous partial spectral observation. These experiments clearly demonstrate that line tracking allows a more efficient use of the radioactive source, as the effort is concentrated in a partial region of the spectra from which the desired information can be obtained.