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 (σfit), that of the calibration of the α-Fe reference spectrum (σcal), thermal corrections to the spectrum due to second order Doppler shift (SODS) (σΔδ) and other experimental errors (σerr). 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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