Development of MMC gamma detectors for precise characterization of uranium isotopes
Precise nuclear data from radioactive decays are important for the accurate non-destructive assay of fissile materials in nuclear safeguards. We are developing high energy resolution gamma detectors based on metallic magnetic calorimeters (MMCs) to accurately measure gamma-ray energies and branching...
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| Main Authors: | , , , , |
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| Format: | Article (Journal) |
| Language: | English |
| Published: |
01 June 2018
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| In: |
Journal of low temperature physics
Year: 2018, Volume: 193, Issue: 5, Pages: 1236-1242 |
| ISSN: | 1573-7357 |
| DOI: | 10.1007/s10909-018-1978-0 |
| Online Access: | Resolving-System, Volltext: https://doi.org/10.1007/s10909-018-1978-0 Verlag: https://link.springer.com/article/10.1007%2Fs10909-018-1978-0 
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| Author Notes: | G.B. Kim, C.C. Flynn, S. Kempf, L. Gastaldo, A. Fleischmann, C. Enss, S. Friedrich |
| Summary: | Precise nuclear data from radioactive decays are important for the accurate non-destructive assay of fissile materials in nuclear safeguards. We are developing high energy resolution gamma detectors based on metallic magnetic calorimeters (MMCs) to accurately measure gamma-ray energies and branching ratios of uranium isotopes. Our MMC gamma detectors exhibit good linearity, reproducibility and a consistent response function for low energy gamma-rays. We illustrate the capabilities of MMCs to improve literature values of nuclear data with an analysis of gamma spectra of U-233. In this context, we also improve the value of the energy for the single gamma-ray of the U-233 daughter Ra-225 by over an order of magnitude from 40.09 ± 0.05 to 40.0932 ± 0.0007 keV. |
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| Item Description: | Gesehen am 18.10.2019 |
| Physical Description: | Online Resource |
| ISSN: | 1573-7357 |
| DOI: | 10.1007/s10909-018-1978-0 |