Spectroscopic Measurements of L X-rays with a TES Microcalorimeter for a Non-destructive Assay of Transuranium Elements

Spectroscopic measurement of the L X-rays emitted from transuranium elements is one of the most useful techniques for the non-destructive assays of nuclear materials. In this study, we fabricated a transition-edge-sensor (TES) microcalorimeter using a 5-μm-thick Au absorber and tested its ability to...

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Veröffentlicht in:	Journal of low temperature physics 2018-11, Vol.193 (3-4), p.314-320
Hauptverfasser:	Nakamura, Keisuke, Morishita, Yuki, Takasaki, Koji, Maehata, Keisuke, Sugimoto, Tetsuya, Kiguchi, Yu, Iyomoto, Naoko, Mitsuda, Kazuhisa
Format:	Artikel
Sprache:	eng
Schlagworte:	Assaying Characterization and Evaluation of Materials Condensed Matter Physics CURIUM 244 ENERGY RESOLUTION INSTRUMENTATION RELATED TO NUCLEAR SCIENCE AND TECHNOLOGY Low temperature physics Magnetic Materials Magnetism NEPTUNIUM 237 Nondestructive testing Nuclear engineering Physics Physics and Astronomy Plutonium SENSORS Spectroscopic analysis TRANSURANIUM ELEMENTS X RADIATION X-rays
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Zusammenfassung:	Spectroscopic measurement of the L X-rays emitted from transuranium elements is one of the most useful techniques for the non-destructive assays of nuclear materials. In this study, we fabricated a transition-edge-sensor (TES) microcalorimeter using a 5-μm-thick Au absorber and tested its ability to measure the L X-rays emitted from two transuranium elements, Np-237 and Cm-244 sources. The microcalorimeter was found to successfully measure the L X-rays with an energy resolution (full width at half maximum) below 70 eV. These results confirm that L X-rays can be identified using the proposed TES microcalorimeter to enable non-destructive assays of transuranium elements.
ISSN:	0022-2291 1573-7357
DOI:	10.1007/s10909-018-1953-9