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

Keisuke Nakamura, Yuki Morishita, Koji Takasaki, Keisuke Maehata, Tetsuya Sugimoto, Yu Kiguchi, Naoko Iyomoto, Kazuhisa Mitsuda

Research output: Contribution to journalArticle

Abstract

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.

Original languageEnglish
Pages (from-to)314-320
Number of pages7
JournalJournal of Low Temperature Physics
Volume193
Issue number3-4
DOIs
Publication statusPublished - Nov 1 2018

All Science Journal Classification (ASJC) codes

  • Atomic and Molecular Physics, and Optics
  • Materials Science(all)
  • Condensed Matter Physics

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