Optimized TES Microcalorimeters with 14 eV Energy Resolution at 30 keV for γ-Ray Measurements of the 229Th Isomer

H. Muramatsu, T. Hayashi, N. Yuasa, R. Konno, A. Yamaguchi, K. Mitsuda, N. Y. Yamasaki, K. Maehata, H. Kikunaga, M. Takimoto, K. Nakamura

研究成果: Article

抜粋

We have developed a four-pixel array of superconducting transition-edge sensors with gold absorbers for the detection of a 29.2 keV γ-ray doublet decay from 229Th. To identify the decay, an energy resolution better than 20 eV full width at half maximum (FWHM) is needed. We measured an energy resolution of 14 eV FWHM for 26 keV γ-ray decay from an 241Am isotope in combined data of three pixels. We describe the design and the performance of the devices and discuss the baseline correction method to compensate the variation in the baseline, which was observed during the evaluation of the performance using the 241Am isotope.

元の言語English
ページ(範囲)452-460
ページ数9
ジャーナルJournal of Low Temperature Physics
200
発行部数5-6
DOI
出版物ステータスPublished - 2020 9 1

ASJC Scopus subject areas

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

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    Muramatsu, H., Hayashi, T., Yuasa, N., Konno, R., Yamaguchi, A., Mitsuda, K., Yamasaki, N. Y., Maehata, K., Kikunaga, H., Takimoto, M., & Nakamura, K. (2020). Optimized TES Microcalorimeters with 14 eV Energy Resolution at 30 keV for γ-Ray Measurements of the 229Th Isomer. Journal of Low Temperature Physics, 200(5-6), 452-460. https://doi.org/10.1007/s10909-020-02458-7