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Optical Design and Efficiency Measurement of an Extreme Ultraviolet High-Resolution Spectrometer for Unresolved Transition Array Research
https://repo.qst.go.jp/records/2002663
https://repo.qst.go.jp/records/2002663120d6fe2-4d1a-4fff-b6ee-52f27b74edcb
| アイテムタイプ | 学術雑誌論文 / Journal Article(1) | |||||||||||||||||||||||||||
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| 公開日 | 2026-02-02 | |||||||||||||||||||||||||||
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| タイトル | Optical Design and Efficiency Measurement of an Extreme Ultraviolet High-Resolution Spectrometer for Unresolved Transition Array Research | |||||||||||||||||||||||||||
| 言語 | en | |||||||||||||||||||||||||||
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| 言語 | eng | |||||||||||||||||||||||||||
| 資源タイプ | ||||||||||||||||||||||||||||
| 資源タイプ識別子 | http://purl.org/coar/resource_type/c_6501 | |||||||||||||||||||||||||||
| 資源タイプ | journal article | |||||||||||||||||||||||||||
| 著者 |
Kawate Tomoko
× Kawate Tomoko
× Tomoko Kawate
× H. A. Sakaue
× C. Suzuki
× N. Nakamura
× K. Tanaka
× E. Nakamura
× K. Fujii
× D. Kato
× Sasaki Akira
× I. Murakami
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| 抄録 | ||||||||||||||||||||||||||||
| 内容記述タイプ | Abstract | |||||||||||||||||||||||||||
| 内容記述 | Understanding the structures of the unresolved transition array (UTA) observed in extreme ultraviolet (EUV) spectra from many-electron atoms is crucial for various applications, including fusion science and nanolithography. To measure the fine structure of the UTA from tungsten and tin at around 5 and 13.5 nm at the Tokyo electron beam ion trap, we developed a high-resolution EUV spectrometer. The designed spectrometer achieves a resolving power of λ/dλ > 5000 at 5 and 13.5 nm. The fabricated large-area grating was experimentally examined at beamline BL5B of the UVSOR synchrotron facility to evaluate the diffraction efficiencies and their variation across the ruled area. The measured diffraction efficiencies are 0.65% ± 0.07% at 5 nm (second order) and 7.9% ± 0.2% at 13.5 nm (first order). The variation in the diffraction efficiency across the ruled area is 2.2%, 13.6%, and 10.0% in zeroth, first, and second order diffractions, respectively. The discrepancies in diffraction efficiencies between the experiments and the calculations were 5.2%, 29%, and 35% for the zeroth, first, and second diffraction orders, respectively. | |||||||||||||||||||||||||||
| 書誌情報 |
Review of Scientific Instruments 巻 96, p. 043512, 発行日 2026-04 |
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| 出版者 | AIP Publishing | |||||||||||||||||||||||||||
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| 識別子タイプ | DOI | |||||||||||||||||||||||||||
| 関連識別子 | 10.1063/5.0250066 | |||||||||||||||||||||||||||
