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: 2009 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+x S alloy. To this end, two strategies were applied: an intelligent absorption line tracking with a control algorithm that uses the datameasured in the previous region to establish 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. Theseexperiments 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.