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  1. 原著論文

Metrology for sub-Rayleigh-length target positioning in ~10^22 W/cm^2 laser-plasma experiments

https://repo.qst.go.jp/records/2001093
https://repo.qst.go.jp/records/2001093
3847c9fa-51ae-44ae-b508-362c93401210
アイテムタイプ 学術雑誌論文 / Journal Article(1)
公開日 2024-03-07
タイトル
タイトル Metrology for sub-Rayleigh-length target positioning in ~10^22 W/cm^2 laser-plasma experiments
言語 en
言語
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 E. A. Vishnyakov

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E. A. Vishnyakov

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Akito Sagisaka

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Akito Sagisaka

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Koichi Ogura

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Koichi Ogura

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Esirkepov Timur

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Esirkepov Timur

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Bruno Gonzalez izquierdo

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Bruno Gonzalez izquierdo

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C. Armstrong

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C. Armstrong

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T. A. Pikuz

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T. A. Pikuz

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S. A. Pikuz

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S. A. Pikuz

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W. Yan

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W. Yan

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T. M. Jeong

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T. M. Jeong

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S. Singh

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S. Singh

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P. Hadjisolomou

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P. Hadjisolomou

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O. Finke

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O. Finke

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G. Grittani

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G. Grittani

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M. Nevrkla

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M. Nevrkla

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C. Lazzarini

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C. Lazzarini

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A. Velyhan

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A. Velyhan

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Takehito Hayakawa

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Takehito Hayakawa

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Yuuji Fukuda

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Yuuji Fukuda

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James Kevin Koga

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James Kevin Koga

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Masahiko Ishino

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Masahiko Ishino

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Kotaro Kondo

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Kotaro Kondo

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Yasuhiro Miyasaka

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Yasuhiro Miyasaka

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Akira Kon

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Akira Kon

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Masaharu Nishikino

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Masaharu Nishikino

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Y. V. Nosach

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Y. V. Nosach

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D. Khikhlukha

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D. Khikhlukha

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I. P. Tsygvintsev

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D. Kumar

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J. Nejdl

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D. Margarone

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抄録
内容記述タイプ Abstract
内容記述 Tight focusing with very small f-numbers is necessary to achieve the highest at-focus irradiances. However, tight focusing imposes strong demands on precise target positioning in-focus to achieve the highest on-target irradiance. We describe several near-infrared, visible, ultraviolet, soft and hard X-ray diagnostics employed in a ~10^22 W/cm^2 laser-plasma experiment. We used ~10 J total energy femtosecond laser pulses focused into a ~1.3-μm focal spot on 5?20 μm thick stainless-steel targets. We discuss the applicability of these diagnostics to determine the best in-focus target position with ~5 μm accuracy (i. e., around ? of the short Rayleigh length) and show that several diagnostics (especially, 3ω reflection and on-axis hard X-rays) can ensure this accuracy. We demonstrated target positioning within several μm from the focus, ensuring over 80% of the ideal peak laser intensity on-target. Our approach is relatively fast (requires 10-20 laser shots) and does not rely on the coincidence of low-power and high-power focal planes.
書誌情報 High Power Laser Science and Engineering

発行日 2024-03
出版者
出版者 Cambrigde University Press
DOI
識別子タイプ DOI
関連識別子 https://doi.org/10.1017/hpl.2024.11
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