@article{08e978fd171e44bf83e46ac2a62630ca,
title = "X-ray Spectroscopy of Muonic Atoms Isolated in Vacuum with Transition Edge Sensors",
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.",
keywords = "Muonic atom, QED, TES, Transition-edge sensor, X-ray spectroscopy",
author = "S. Okada and T. Azuma and Bennett, {D. A.} and P. Caradonna and Doriese, {W. B.} and Durkin, {M. S.} and Fowler, {J. W.} and Gard, {J. D.} and T. Hashimoto and R. Hayakawa and Hilton, {G. C.} and Y. Ichinohe and P. Indelicato and T. Isobe and S. Kanda and M. Katsuragawa and N. Kawamura and Y. Kino and Y. Miyake and Morgan, {K. M.} and K. Ninomiya and H. Noda and O{\textquoteright}Neil, {G. C.} and T. Okumura and Reintsema, {C. D.} and Schmidt, {D. R.} and K. Shimomura and P. Strasser and Swetz, {D. S.} and T. Takahashi and S. Takeda and S. Takeshita and H. Tatsuno and Y. Ueno and Ullom, {J. N.} and S. Watanabe and S. Yamada",
note = "Funding Information: This work was partly supported by the Grants-in-Aid for Scientific Research (KAKENHI) from MEXT and JSPS (No. 18H05458). The authors are grateful to the members in the NIST Quantum Sensors Project. We appreciate the significant contributions by J-PARC, KEK, RIKEN, and those who have backed up the J-PARC MLF 2019A0083 experiment. Funding Information: This work was partly supported by the Grants-in-Aid for Scientific Research (KAKENHI) from MEXT and JSPS (No. 18H05458). The authors are grateful to the members in the NIST Quantum Sensors Project. We appreciate the significant contributions by J-PARC, KEK, RIKEN, and those who have backed up the J-PARC MLF 2019A0083 experiment. Publisher Copyright: {\textcopyright} 2020, Springer Science+Business Media, LLC, part of Springer Nature.",
year = "2020",
month = sep,
day = "1",
doi = "10.1007/s10909-020-02476-5",
language = "English",
volume = "200",
pages = "445--451",
journal = "Journal of Low Temperature Physics",
issn = "0022-2291",
publisher = "Springer New York",
number = "5-6",
}