Development of MMC Gamma Detectors for Nuclear Analysis
| Autor: | L. Gastaldo, Andreas Fleischmann, Sebastian Kempf, C. R. Bates, Christian Enss, C. Pies, Stephan Friedrich |
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| Rok vydání: | 2014 |
| Předmět: |
Physics
Physics::Instrumentation and Detectors Monte Carlo method Resolution (electron density) Detector Gamma ray chemistry.chemical_element Condensed Matter Physics Atomic and Molecular Physics and Optics Spent nuclear fuel Calorimeter Plutonium Nuclear physics chemistry General Materials Science Energy (signal processing) |
| Zdroj: | Journal of Low Temperature Physics. 176:631-636 |
| ISSN: | 1573-7357 0022-2291 |
| Popis: | 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. |
| Databáze: | OpenAIRE |
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