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Hyperfine Interactions

, 237:23 | Cite as

Uncertainty budget for determinations of mean isomer shift from Mössbauer spectra

  • Jeppe Fock
  • Lara Katrina Bogart
  • Oliver Posth
  • Mikkel Fougt Hansen
  • Quentin A. Pankhurst
  • Cathrine Frandsen
Article
Part of the following topical collections:
  1. Proceedings of the International Conference on the Applications of the Mössbauer Effect (ICAME 2015), Hamburg, Germany, 13-18 September 2015

Abstract

The magnetite/maghemite content within iron oxide nanoparticles can be determined using the mean isomer shift (\(\overline {\delta }\)). However, accurate characterisation of the composition is limited by the uncertainty associated with \(\overline {\delta }\). We have identified four independent sources of uncertainty and developed a quantitative expression for the uncertainty budget. Sources of uncertainty are categorised as follows: that from the fitting of the Mössbauer spectrum (σ fit), that of the calibration of the α-Fe reference spectrum (σ cal), thermal corrections to the spectrum due to second order Doppler shift (SODS) (σ Δδ ) and other experimental errors (σ err). Each contribution is discussed in detail using 57Fe Mössbauer spectra obtained from an iron oxide nanoparticle system at temperatures between 16 K and 295 K on different spectrometers in two different laboratories.

Keywords

57Fe Mössbauer Uncertainty budget Isomer shift Second order Doppler shift 

Supplementary material

10751_2016_1253_MOESM1_ESM.pdf (118 kb)
(PDF 118 KB)

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Copyright information

© Springer International Publishing Switzerland 2016

Authors and Affiliations

  • Jeppe Fock
    • 1
    • 4
  • Lara Katrina Bogart
    • 2
  • Oliver Posth
    • 3
  • Mikkel Fougt Hansen
    • 1
  • Quentin A. Pankhurst
    • 2
  • Cathrine Frandsen
    • 4
  1. 1.Department of Micro- and Nanotechnology, DTU Nanotech, Building 345 EastTechnical University of DenmarkKongens LyngbyDenmark
  2. 2.UCL Healthcare Biomagnetics LaboratoryUniversity College LondonLondonUK
  3. 3.Department 8.2 BiosignalsPhysikalisch-Technische BundesanstaltBerlinGermany
  4. 4.Department of Physics, DTU Physics, Building 307Technical University of DenmarkKongens LyngbyDenmark

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