Mössbauer parameters of ordinary chondrites influenced by the fit accuracy of the troilite component: an example of Chelyabinsk LL5 meteorite

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• 作者：A. A. Maksimova ; Z. Klencsár ; M. I. Oshtrakh ; E. V. Petrova…
• 关键词：Mössbauer spectroscopy ; Chelyabinsk LL5 ordinary chondrite ; Mössbauer parameters ; Troilite
• 刊名：Hyperfine Interactions
• 出版年：2016
• 出版时间：December 2016
• 年：2016
• 卷：237
• 期：1
• 全文大小：1,267 KB
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• 作者单位：A. A. Maksimova (1)
  Z. Klencsár (2)
  M. I. Oshtrakh (1) (3)
  E. V. Petrova (1)
  V. I. Grokhovsky (1)
  E. Kuzmann (4)
  Z. Homonnay (4)
  V. A. Semionkin (1) (3)
  
  1. Department of Physical Techniques and Devices for Quality Control, Institute of Physics and Technology, Ural Federal University, Ekaterinburg, 620002, Russian Federation
  2. Institute of Materials and Environmental Chemistry, Research Centre for Natural Sciences, Hungarian Academy of Sciences, Magyar tudósok körútja 2, Budapest, 1117, Hungary
  3. Department of Experimental Physics, Institute of Physics and Technology, Ural Federal University, Ekaterinburg, 620002, Russian Federation
  4. Institute of Chemistry, Eötvös Loránd University, 1117, Budapest, Pázmány sétány1/A, Hungary
  
• 刊物类别：Physics and Astronomy
• 刊物主题：Physics
  Nuclear Physics, Heavy Ions and Hadrons
  Atoms, Molecules, Clusters and Plasmas
  Condensed Matter
  Surfaces and Interfaces and Thin Films
  
• 出版者：Springer Netherlands
• ISSN：1572-9540

文摘

The influence of the fit accuracy of the troilite component in the Mössbauer spectra of ordinary chondrites on the parameters obtained for other spectral components was evaluated using the Mössbauer spectrum of Chelyabinsk LL5 meteorite fragment with light lithology as a typical example. It was shown that with respect to the application of a usual sextet component where quadrupole interaction is taken into account in the first-order perturbation limit, substantial improvement of the spectrum fit can be achieved either by using the full Hamiltonian description of the troilite component or by its formal approximation with the superposition of three symmetric doublet components. Parameter values obtained for the main spectral components related to olivine and pyroxene were not sensitive to the fit of troilite component while parameters of the minor spectral components depended on the way of troilite component fitting.