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Boosting laser-ion acceleration with multi-picosecond pulses
https://repo.qst.go.jp/records/48038
https://repo.qst.go.jp/records/48038ff40a122-78ee-43d3-a276-0e120bb93656
Item type | 学術雑誌論文 / Journal Article(1) | |||||
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公開日 | 2017-06-06 | |||||
タイトル | ||||||
タイトル | Boosting laser-ion acceleration with multi-picosecond pulses | |||||
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 |
Yogo, Akifumi
× Yogo, Akifumi× Mima, Kunioki× Iwata, Natsumi× Tosaki, Shota× Morace, Alessio× Arikawa, Yasunobu× Fujioka, Shinsuke× Johzaki, Tomoyuki× Sentoku, Yasuhiko× Nishimura, Hiroaki× Sagisaka, Akito× Matsuo, Kazuki× Kamitsukasa, Naoyoshi× Kojima, Sadaoki× Nagatomo, Hideo× Nakai, Mitsuo× Shiraga, Hiroyuki× Murakami, Masakatsu× Tokita, Shigeki× Kawanaka, Junji× Miyanaga, Noriaki× Yamanoi, Kohei× Norimatsu, Takayoshi× Sakagami, Hitoshi× Bulanov, Sergey× Kondo, Kiminori× Azechi, Hiroshi× 匂坂 明人× ブラノフ セルゲイ× 近藤 公伯 |
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抄録 | ||||||
内容記述タイプ | Abstract | |||||
内容記述 | Using one of the world most powerful laser facility, we demonstrate for the rst time that high-contrast multi-picosecond pulses are advantageous for proton acceleration. By extending the pulse duration from 1.5 to 6 ps with xed laser intensity of 10^18 W cm^−2, the maximum proton energy is improved more than twice (from 13 to 33 MeV). At the same time, laser-energy conversion e ciency into the MeV protons is enhanced with an order of magnitude, achieving 5% for protons above 6 MeV with the 6 ps pulse duration. The proton energies observed are discussed using a plasma expansion model newly developed that takes the electron temperature evolution beyond the ponderomotive energy in the over picoseconds interaction into account. The present results are quite encouraging for realizing ion-driven fast ignition and novel ion beamlines. | |||||
書誌情報 |
Scientific Reports (Online Only URL:http://www.nature.com/srep/index.html) 巻 7, p. 42451-1-42451-10, 発行日 2017-02 |
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ISSN | ||||||
収録物識別子タイプ | ISSN | |||||
収録物識別子 | 2045-2322 | |||||
DOI | ||||||
識別子タイプ | DOI | |||||
関連識別子 | 10.1038/srep42451 |