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タイトル: | Laser-driven multi-MeV high-purity proton acceleration via anisotropic ambipolar expansion of micron-scale hydrogen clusters |
著者: | Jinno, Satoshi Kanasaki, Masato Asai, Takafumi Matsui, Ryutaro Pirozhkov, Alexander S. Ogura, Koichi Sagisaka, Akito Miyasaka, Yasuhiro Nakanii, Nobuhiko Kando, Masaki Kitagawa, Nobuko Morishima, Kunihiro Kodaira, Satoshi Kishimoto, Yasuaki https://orcid.org/0000-0002-3049-9063 (unconfirmed) Yamauchi, Tomoya Uesaka, Mitsuru Kiriyama, Hiromitsu Fukuda, Yuji |
著者名の別形: | 神野, 智史 金崎, 真聡 浅井, 孝文 松井, 隆太郎 小倉, 浩一 匂坂, 明人 宮坂, 泰弘 中新, 信彦 神門, 正城 北川, 暢子 森島, 邦博 小平, 聡 岸本, 泰明 山内, 知也 上坂, 充 桐山, 博光 福田, 祐仁 |
キーワード: | High-field lasers Laser-produced plasmas Nanoparticles Plasma-based accelerators Ultrafast lasers |
発行日: | 12-Oct-2022 |
出版者: | Springer Nature |
誌名: | Scientific Reports |
巻: | 12 |
論文番号: | 16753 |
抄録: | Multi-MeV high-purity proton acceleration by using a hydrogen cluster target irradiated with repetitive, relativistic intensity laser pulses has been demonstrated. Statistical analysis of hundreds of data sets highlights the existence of markedly high energy protons produced from the laser-irradiated clusters with micron-scale diameters. The spatial distribution of the accelerated protons is found to be anisotropic, where the higher energy protons are preferentially accelerated along the laser propagation direction due to the relativistic effect. These features are supported by three-dimensional (3D) particle-in-cell (PIC) simulations, which show that directional, higher energy protons are generated via the anisotropic ambipolar expansion of the micron-scale clusters. The number of protons accelerating along the laser propagation direction is found to be as high as 1.6 ±0.3 × 10⁹/MeV/sr/shot with an energy of 2.8 ±1.9 MeV, indicating that laser-driven proton acceleration using the micron-scale hydrogen clusters is promising as a compact, repetitive, multi-MeV high-purity proton source for various applications. |
記述: | 強力なレーザーを使ってエネルギーがそろった純度100%の陽子ビーム発生に成功 --レーザー駆動陽子ビーム加速器の実現へ向けて大きく前進--. 京都大学プレスリリース. 2022-10-13. |
著作権等: | © The Author(s) 2022 This article is licensed under a Creative Commons Attribution 4.0 International License, which permits use, sharing, adaptation, distribution and reproduction in any medium or format, as long as you give appropriate credit to the original author(s) and the source, provide a link to the Creative Commons licence, and indicate if changes were made. The images or other third party material in this article are included in the article's Creative Commons licence, unless indicated otherwise in a credit line to the material. If material is not included in the article's Creative Commons licence and your intended use is not permitted by statutory regulation or exceeds the permitted use, you will need to obtain permission directly from the copyright holder. |
URI: | http://hdl.handle.net/2433/276736 |
DOI(出版社版): | 10.1038/s41598-022-18710-x |
PubMed ID: | 36224197 |
関連リンク: | https://www.kyoto-u.ac.jp/ja/research-news/2022-10-13-0 |
出現コレクション: | 学術雑誌掲載論文等 |
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