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Journal of Low Temperature Physics

, Volume 176, Issue 5–6, pp 631–636 | Cite as

Development of MMC Gamma Detectors for Nuclear Analysis

  • C. R. Bates
  • C. Pies
  • S. Kempf
  • L. Gastaldo
  • A. Fleischmann
  • C. Enss
  • S. Friedrich
Article

Abstract

Non-destructive assay (NDA) of nuclear materials would benefit from gamma detectors with improved energy resolution in cases where line overlap in current Ge detectors limits NDA accuracy. We are developing metallic magnetic calorimeter gamma-detectors for this purpose by electroplating \(\sim \)150 \(\upmu \)m thick Au absorbers into microfabricated molds on top of Au:Er sensors. Initial tests under non-optimized conditions show an energy resolution of \(\sim \)200 eV FWHM at 60 keV. Monte Carlo simulations illustrate that this resolution is starting to be sufficient for direct detection of \(^{242}\)Pu in plutonium separated from spent nuclear fuel.

Keywords

MMC Gamma ray Low-temperature detectors Metallic magnetic calorimeters  Nuclear safeguards 

Notes

Acknowledgments

This work was funded by the US Department of Energy Office on Non-proliferation Research NA-22 under Grant LL12-MagMicro-PD2Ja. This work was performed under the auspices of the US Department of Energy by Lawrence Livermore National Laboratory under Contract DE-AC52-07NA27344.

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Copyright information

© Springer Science+Business Media New York 2014

Authors and Affiliations

  • C. R. Bates
    • 1
  • C. Pies
    • 2
  • S. Kempf
    • 2
  • L. Gastaldo
    • 2
  • A. Fleischmann
    • 2
  • C. Enss
    • 2
  • S. Friedrich
    • 1
  1. 1.Lawrence Livermore National LaboratoryLivermoreUSA
  2. 2.Kirchhoff-Institut für Physik Universität HeidelbergHeidelbergGermany

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