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Radiation pressure acceleration: The factors limiting maximum attainable ion energy
https://repo.qst.go.jp/records/48050
https://repo.qst.go.jp/records/48050df5f2330-134d-44aa-aa0a-7c0434e267ab
Item type | 学術雑誌論文 / Journal Article(1) | |||||
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公開日 | 2017-06-14 | |||||
タイトル | ||||||
タイトル | Radiation pressure acceleration: The factors limiting maximum attainable ion energy | |||||
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 | |||||
アクセス権 | ||||||
アクセス権 | metadata only access | |||||
アクセス権URI | http://purl.org/coar/access_right/c_14cb | |||||
著者 |
S., Bulanov S.
× S., Bulanov S.× Esarey, E.× B., Schroeder C.× ブラノフ, セルゲイ× Timur, Esirkepov× Kando, Masaki× Pegoraro, F.× P., Leemans W.× ブラノフ セルゲイ× エシロケポフ ティムル× 神門 正城 |
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抄録 | ||||||
内容記述タイプ | Abstract | |||||
内容記述 | Radiation pressure acceleration (RPA) is a highly efficient mechanism of laser-driven ion acceleration, with near complete transfer of the laser energy to the ions in the relativistic regime. However, there is a fundamental limit on the maximum attainable ion energy, which is determined by the group velocity of the laser. The tightly focused laser pulses have group velocities smaller than the vacuum light speed, and, since they offer the high intensity needed for the RPA regime, it is plausible that group velocity effects would manifest themselves in the experiments involving tightly focused pulses and thin foils. However, in this case, finite spot size effects are important, and another limiting factor, the transverse expansion of the target, may dominate over the group velocity effect. As the laser pulse diffracts after passing the focus, the target expands accordingly due to the transverse intensity profile of the laser. Due to this expansion, the areal density of the target decreases, making it transparent for radiation and effectively terminating the acceleration. The off normal incidence of the laser on the target, due either to the experimental setup, or to the deformation of the target, will also lead to establishing a limit on maximum ion energy |
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書誌情報 |
Physics of Plasmas 巻 23, 号 5, p. 056703-1-056703-13, 発行日 2016-04 |
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出版者 | ||||||
出版者 | American Institute of Physics | |||||
ISSN | ||||||
収録物識別子タイプ | ISSN | |||||
収録物識別子 | 1070-664X | |||||
DOI | ||||||
識別子タイプ | DOI | |||||
関連識別子 | 10.1063/1.4946025 |