Gamma-Ray Spectrometer based on a Transition Edge Sensor for Nuclear Materials Analysis

We designed and fabricated a hard X-ray and gamma-ray TES spectrometer for nuclear materials analysis. The superconducting tin absorber is coupled to an Ir/Au TES by using a gold post to improve the thermal contact between the absorber and the TES. The reported energy resolution is 156 eV FWHM at 59...

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Veröffentlicht in:	Journal of low temperature physics 2014-08, Vol.176 (3-4), p.560-565
Hauptverfasser:	Hatakeyama, S., Ohno, M., Takahashi, H., Damayanthi, R. M. T., Otani, C., Yasumune, T., Ohnishi, T., Takasaki, K., Koyama, S.
Format:	Artikel
Sprache:	eng
Schlagworte:	Characterization and Evaluation of Materials Condensed Matter Physics Contact Gold Low temperature physics Magnetic Materials Magnetism Nuclear engineering Physics Physics and Astronomy Plutonium Spectrometers Superconductivity X-rays
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Beschreibung
Zusammenfassung:	We designed and fabricated a hard X-ray and gamma-ray TES spectrometer for nuclear materials analysis. The superconducting tin absorber is coupled to an Ir/Au TES by using a gold post to improve the thermal contact between the absorber and the TES. The reported energy resolution is 156 eV FWHM at 59.5 keV and 166 eV FWHM at 122 keV gamma-rays. We performed measurement of a Pu sample and clearly separated the 239 Pu (56.828 keV) and the 241 Am (59.5 keV) peaks by this TES microcalorimeter which cannot be resolved by the HPGe detector.
ISSN:	0022-2291 1573-7357
DOI:	10.1007/s10909-014-1090-z