X-ray Spectroscopy of Muonic Atoms Isolated in Vacuum with Transition Edge Sensors

S. Okada, T. Azuma, D. A. Bennett, P. Caradonna, W. B. Doriese, M. S. Durkin, J. W. Fowler, J. D. Gard, T. Hashimoto, R. Hayakawa, G. C. Hilton, Y. Ichinohe, P. Indelicato, T. Isobe, S. Kanda, M. Katsuragawa, N. Kawamura, Y. Kino, Y. Miyake, K. M. MorganK. Ninomiya, H. Noda, G. C. O’Neil, T. Okumura, C. D. Reintsema, D. R. Schmidt, K. Shimomura, P. Strasser, D. S. Swetz, T. Takahashi, S. Takeda, S. Takeshita, H. Tatsuno, Y. Ueno, J. N. Ullom, S. Watanabe, S. Yamada

Research output: Contribution to journalArticlepeer-review

Abstract

High-resolution X-ray spectroscopy of the highly charged muonic atoms/ions isolated in vacuum is an ideal probe to explore quantum electrodynamics under extremely strong electric fields, which is one of the major topic in fundamental atomic physics. A feasibility test measurement with a low-density neon gas target was performed by observing X-rays emitted by muonic neon via the 5 → 4 transition, ∼ 6.3 keV, using a multi-pixel array of superconducting transition-edge-sensor (TES) microcalorimeters at the J-PARC muon facility. We successfully demonstrated the feasibility of muonic atom X-ray spectroscopy with a gas target at a pressure as low as 0.1 atom using TES array under an intense pulsed muon beam.

Original languageEnglish
Pages (from-to)445-451
Number of pages7
JournalJournal of Low Temperature Physics
Volume200
Issue number5-6
DOIs
Publication statusPublished - 2020 Sep 1

Keywords

  • Muonic atom
  • QED
  • TES
  • Transition-edge sensor
  • X-ray spectroscopy

ASJC Scopus subject areas

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

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