Electron temperature optimization for efficient water-window soft x-ray emission from discharge-produced highly charged zirconium ions

Hayato Ohashi; Hiroyuki Hara; Bowen Li; Padraig Dunne; Gerry O’Sullivan; Akira Sasaki; Chihiro Suzuki; Naoki Tamura; Hiroyuki A. Sakaue; Daiji Kato; Izumi Murakami; Takeshi Higashiguchi

doi:10.1364/JOSAB.36.003555

Electron temperature optimization for efficient water-window soft x-ray emission from discharge-produced highly charged zirconium ions

Hayato Ohashi, Hiroyuki Hara, Bowen Li, Padraig Dunne, Gerry O’Sullivan, Akira Sasaki, Chihiro Suzuki, Naoki Tamura, Hiroyuki A. Sakaue, Daiji Kato, Izumi Murakami, Takeshi Higashiguchi^*

^*この論文の責任著者

教養教育学系

研究成果: ジャーナルへの寄稿 › 学術論文 › 査読

抄録

We determined the optimum electron temperature for water-window soft x-ray emission by observing the spectral behavior in the 2.3–4.4 nm region of highly charged zirconium (Zr) ions in hot hydrogen plasmas produced in a magnetically confined fusion device. In the water-window soft x-ray spectral region, the main emission involved resonant 3d − 4 f (1n = 1) transitions. According to the collisional-radiative (CR) model verified by the experimental results, the ionic population for the charge states from Zr¹⁴ ⁺ to Zr²⁰ ⁺ required to produce the emission was maximized in the electron temperature range of 80–180 eV.

本文言語	英語
ページ（範囲）	3555-3561
ページ数	7
ジャーナル	Journal of the Optical Society of America B: Optical Physics
巻	36
号	12
DOI	https://doi.org/10.1364/JOSAB.36.003555
出版ステータス	出版済み - 2019

ASJC Scopus 主題領域

統計物理学および非線形物理学
原子分子物理学および光学

文献へのアクセス

10.1364/JOSAB.36.003555

フィンガープリント

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引用スタイル

Ohashi, H., Hara, H., Li, B., Dunne, P., O’Sullivan, G., Sasaki, A., Suzuki, C., Tamura, N., Sakaue, H. A., Kato, D., Murakami, I., & Higashiguchi, T. (2019). Electron temperature optimization for efficient water-window soft x-ray emission from discharge-produced highly charged zirconium ions. Journal of the Optical Society of America B: Optical Physics, 36(12), 3555-3561. https://doi.org/10.1364/JOSAB.36.003555

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title = "Electron temperature optimization for efficient water-window soft x-ray emission from discharge-produced highly charged zirconium ions",

abstract = "We determined the optimum electron temperature for water-window soft x-ray emission by observing the spectral behavior in the 2.3–4.4 nm region of highly charged zirconium (Zr) ions in hot hydrogen plasmas produced in a magnetically confined fusion device. In the water-window soft x-ray spectral region, the main emission involved resonant 3d − 4 f (1n = 1) transitions. According to the collisional-radiative (CR) model verified by the experimental results, the ionic population for the charge states from Zr14 + to Zr20 + required to produce the emission was maximized in the electron temperature range of 80–180 eV.",

author = "Hayato Ohashi and Hiroyuki Hara and Bowen Li and Padraig Dunne and Gerry O{\textquoteright}Sullivan and Akira Sasaki and Chihiro Suzuki and Naoki Tamura and Sakaue, {Hiroyuki A.} and Daiji Kato and Izumi Murakami and Takeshi Higashiguchi",

note = "Publisher Copyright: {\textcopyright} 2019 Optical Society of America",

year = "2019",

doi = "10.1364/JOSAB.36.003555",

language = "英語",

volume = "36",

pages = "3555--3561",

journal = "Journal of the Optical Society of America B: Optical Physics",

issn = "0740-3224",

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Ohashi, H, Hara, H, Li, B, Dunne, P, O’Sullivan, G, Sasaki, A, Suzuki, C, Tamura, N, Sakaue, HA, Kato, D, Murakami, I & Higashiguchi, T 2019, 'Electron temperature optimization for efficient water-window soft x-ray emission from discharge-produced highly charged zirconium ions', Journal of the Optical Society of America B: Optical Physics, vol. 36, no. 12, pp. 3555-3561. https://doi.org/10.1364/JOSAB.36.003555

TY - JOUR

T1 - Electron temperature optimization for efficient water-window soft x-ray emission from discharge-produced highly charged zirconium ions

AU - Ohashi, Hayato

AU - Hara, Hiroyuki

AU - Li, Bowen

AU - Dunne, Padraig

AU - O’Sullivan, Gerry

AU - Sasaki, Akira

AU - Suzuki, Chihiro

AU - Tamura, Naoki

AU - Sakaue, Hiroyuki A.

AU - Kato, Daiji

AU - Murakami, Izumi

AU - Higashiguchi, Takeshi

PY - 2019

Y1 - 2019

N2 - We determined the optimum electron temperature for water-window soft x-ray emission by observing the spectral behavior in the 2.3–4.4 nm region of highly charged zirconium (Zr) ions in hot hydrogen plasmas produced in a magnetically confined fusion device. In the water-window soft x-ray spectral region, the main emission involved resonant 3d − 4 f (1n = 1) transitions. According to the collisional-radiative (CR) model verified by the experimental results, the ionic population for the charge states from Zr14 + to Zr20 + required to produce the emission was maximized in the electron temperature range of 80–180 eV.

AB - We determined the optimum electron temperature for water-window soft x-ray emission by observing the spectral behavior in the 2.3–4.4 nm region of highly charged zirconium (Zr) ions in hot hydrogen plasmas produced in a magnetically confined fusion device. In the water-window soft x-ray spectral region, the main emission involved resonant 3d − 4 f (1n = 1) transitions. According to the collisional-radiative (CR) model verified by the experimental results, the ionic population for the charge states from Zr14 + to Zr20 + required to produce the emission was maximized in the electron temperature range of 80–180 eV.

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DO - 10.1364/JOSAB.36.003555

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SN - 0740-3224

VL - 36

SP - 3555

EP - 3561

JO - Journal of the Optical Society of America B: Optical Physics

JF - Journal of the Optical Society of America B: Optical Physics

IS - 12

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