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57Fe Mössbauer spectroscopy of radiation damaged samarskites and gadolinites

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Abstract

We report the results of 57Fe Mössbauer spectroscopy, gamma-ray spectrometry and X-ray diffraction of two fully metamict samarskites and two partially metamict gadolinites. The absorbed α-dose for these minerals are found to range from 3.6 × 1015 α-decay/mg for one of the gadolinite samples to 7.7 × 1017 α-decay/mg for one of the samarskite samples. The Mössbauer spectra of samarskites and gadolinites show increasing line widths of the Fe2 +  doublets with absorbed α-dose. We also observe that the increase in average quadrupole splitting of the Fe2 +  cmponents correlates better with absorbed α-dose from 232Th than with total α-dose.

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Authors and Affiliations

  1. Faculty of Earth Sciences, University of Silesia, Bedzińska 60, 41-200, Sosnowiec, Poland

    Dariusz Malczewski

  2. Institute of Electronic Materials Technology, Wolczyńska 133, 01-919, Warszawa, Poland

    Agnieszka Grabias

  3. Institute of Materials Science, University of Silesia, Bankowa 12, 40-007, Katowice, Poland

    Grzegorz Dercz

Authors
  1. Dariusz Malczewski
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  2. Agnieszka Grabias
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  3. Grzegorz Dercz
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Correspondence to Dariusz Malczewski.

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Malczewski, D., Grabias, A. & Dercz, G. 57Fe Mössbauer spectroscopy of radiation damaged samarskites and gadolinites. Hyperfine Interact 195, 85–91 (2010). https://doi.org/10.1007/s10751-009-0105-7

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