2016年9月
First application of superconducting transition-edge sensor microcalorimeters to hadronic atom X-ray spectroscopy
PROGRESS OF THEORETICAL AND EXPERIMENTAL PHYSICS
- 巻
- vol.2016
- 号
- 9
- 開始ページ
- 091D01
- 終了ページ
- 記述言語
- 英語
- 掲載種別
- 研究論文(学術雑誌)
- DOI
- 10.1093/ptep/ptw130
- 出版者・発行元
- OXFORD UNIV PRESS INC
High-resolution pionic atom X-ray spectroscopy was performed with an X-ray spectrometer based on a 240 pixel array of superconducting transition-edge sensor (TES) microcalorimeters at the pi M1 beam line of the Paul Scherrer Institute. X-rays emitted by pionic carbon via the 4f -> 3d transition and the parallel 4d -> 3p transition were observed with a full width at half maximum energy resolution of 6.8 eV at 6.4 keV. The measured X-ray energies are consistent with calculated electromagnetic values which considered the strong interaction effect assessed via the Seki-Masutani potential for the 3p energy level, and favor the electronic population of two filled 1s electrons in the K-shell. Absolute energy calibration with an uncertainty of 0.1 eV was demonstrated under a high-rate hadron beam condition of 1.45 MHz. This is the first application of a TES spectrometer to hadronic atom X-ray spectroscopy and is an important milestone towards next-generation high-resolution kaonic atom X-ray spectroscopy.
- リンク情報
- ID情報
-
- DOI : 10.1093/ptep/ptw130
- ISSN : 2050-3911
- Web of Science ID : WOS:000388578000017