Relativistic Engineering and Extreme Field Science

相对论工程和极端场科学

• 批准号: 15002013
• 负责人: TAJIMA Toshiki
• 金额: $ 344.45万
• 依托单位: Japan Atomic Energy Agency
• 依托单位国家: 日本
• 项目类别: Grant-in-Aid for Specially Promoted Research
• 财政年份: 2003
• 资助国家: 日本
• 起止时间: 2003 至 2007
• 项目状态: 已结题
• 来源: https://kaken.nii.ac.jp/grant/KAKENHI-PROJECT-15002013/
• 关键词: Relativistic Engineering; Intense Laser; Laser Wakefield; X-ray; Quasi-monoenergetic electron beam; Relativistic Plasma; Flying Mirror; 高速飛翔鏡; 航跡場; プラズマ; X線発生; 電子発生; 放射線、X線、粒子線; 高強度場科学

We have carried out the first ever experiment that shows the efficacy of "Relativistic Engineering".We have experimentally demonstrated the reflection of a laser pulse from the wake generated by another ultrashort, high-irradiance laser pulse propagating in underdense plasma. The reflection is accompanied by the relativistic frequency upshifting by a factor ranging from 55 to 114, with the reflected pulse in the XUV spectral region (the wavelength is from 7 to 15 nm). In several shots, the signal exceeds noise by five standard deviations. Our interpretation is corroborated by correlations of the reflected signal with the source pulse delay and spatial alignment, small size of the reflected signal origin, and dependence of the signal presence on the crossing-point position. In addition, the results are in a good agreement with the 2D PIC simulations, including the frequency multiplication factor, the reflected pulse bandwidth, and the position of the goodquality wake wave. The PIC simul … More ation gives also the angular distribution of the reflected signal consistent with the focusing paraboloidal shape of the reflecting surfaces.Our proof-of-principle experiments open a way to generate coherent ultrashort pulses in the VUV, XUV, soft x-ray, and x-ray spectral regions using the reflection from the relativistic flying mirror. The reflected pulses are orders of magnitude shorter than the original laser pulses employed. The reflected pulses are also conceived to be focusable to record intensities due to the smaller focal spot size. The setup fits into the size of a laboratory-scale experiment. The flying mirror technique is scalable, which eventually may lead to intensities under which the nonlinearities of vacuum can be detected. Apart from this, the radiation reflected from the wake wave can provide important information about the wake phase velocity, length, density modulations, etc.In addition, we demonstrate the generation of the polarized Thomson backscattered x-rays in the 400 keV energy region by using the Nd : YAG laser and the 150 MeV electron beam from the microtron accelerator. The source of the tunably polarized x-rays in this energy region is unique at the present. Less

我们进行了有史以来第一个展示“相对论工程”功效的实验。我们通过实验证明了在低密度等离子体中传播的另一个超短、高辐照度激光脉冲所产生的尾迹会反射激光脉冲。通过相对论频率上移 55 至 114 倍，反射脉冲位于 XUV 光谱区域（波长为 7 至 15 nm）。超过噪声五个标准偏差。反射信号与源脉冲延迟和空间对准的相关性、反射信号源的小尺寸以及信号存在对交叉点位置的依赖性证实了我们的解释。结果与 2D PIC 模拟非常吻合，包括倍频因子、反射脉冲带宽和优质尾波的位置。PIC 模拟还给出了一致的反射信号角度分布。反射面的聚焦抛物面形状。我们的原理验证实验开辟了一种利用相对论飞镜的反射在 VUV、XUV、软 X 射线和 X 射线光谱区域生成相干超短脉冲的方法由于焦斑尺寸较小，反射脉冲比原始激光脉冲短几个数量级，因此可以聚焦以记录强度。飞镜技术是可扩展的，最终可能导致可以检测到真空非线性的强度除此之外，从尾流反射的辐射可以提供有关尾流相速度、长度、密度调制的重要信息。此外，我们还演示了使用 Nd: YAG 激光器和来自 microtron 的 150 MeV 电子束在 400 keV 能量区域产生偏振汤姆逊背散射 X 射线目前，该能量区域中可调谐偏振 X 射线的来源是独一无二的。

项目成果

Demonstration of laser-frequency upshift by electron-density modulations in a plasma wakefield

• DOI: 10.1103/physrevlett.99.135001
• 发表时间: 2007-09-28
• 期刊: PHYSICAL REVIEW LETTERS
• 影响因子: 8.6
• 作者: Kando, M.;Fukuda, Y.;Tajima, T.
• 通讯作者: Tajima, T.

Frequency multiplication of light back-reflected from a relativistic wake wave

• DOI: 10.1063/1.2816443
• 发表时间: 2007-12
• 期刊: Physics of Plasmas
• 影响因子: 2.2
• 作者: A. Pirozhkov;Jinglong Ma;M. Kando;T. Esirkepov;Y. Fukuda;L. Chen;I. Daito;K. Ogura;T. Homma;Y. Hayashi;H. Kotaki;A. Sagisaka;M. Mori;J. Koga;T. Kawachi;H. Daido;S. V. Bulanov;T. Kimura;Y. Kato;T. Tajima

Transverse dynamics and energy tuning of fast electrons generated in sub-relativistic intensity laser pulse interaction with plasmas

• DOI: 10.1016/j.physleta.2006.06.001
• 发表时间: 2006-05
• 期刊: Physics Letters A
• 影响因子: 2.6
• 作者: M. Mori;M. Kando;I. Daito;H. Kotaki;Y. Hayashi;A. Yamazaki;K. Ogura;A. Sagisaka;J. Koga;K. Nakajima;H. Daido;S. V. Bulanov;T. Kimura

Improvement of the JAEA J-KAREN Laser and Its Applications to High Field Science Single-Shot Diagnosis of Wakefields via the Detection of Spectrum and Phase of the Transmitted Laser Pulse

JAEA J-KAREN 激光器的改进及其通过检测发射激光脉冲的光谱和相位在高场科学单次诊断韦克场中的应用

• 发表时间: 2007
• 作者: F. Lutz;T. Igarashi;T. Kinoshita;M. Asahina;K. Tsukiyama;T. Kawasaki;K. Soai;L. M. Chen;K. Soai;Kenso Soai;M. Kando;Kenso Soai;川瀬 啓悟;Kenso Soai;K. Kawase;Kunihiko Hatase;L. M. Chen;Tomoyuki Kinoshita;L. M. Chen;Yutaro Takahashi;L. M. Chen;Kenso Soai;Kunihiko Hatase;T. Tajima;Tomoyuki Kinoshita;T. Tajima;Yutaro Takahashi;Tsuneomi Kawasaki;S. V. Bulanov;Kenso Soai;S. V. Bulanov;Tsuneomi Kawasaki;S. V. Bulanov;Kenso Soai;A. S. Pirozhkov;Kenso Soai;A. S. Pirozhkov;Kenso Soai;田島 俊樹;松村友香里;S. V. Bulanov;伊藤真央;神門 正城;箱田裕子;Tsuneomi Kawasaki;福田 祐仁;Kent a Suzuki;T. Tajima;S. V. Bulanov;Tsuneomi Kawasaki;M. Kando;Kenta Suzuki;Y. Fukuda;Kent a Suzuki;A. S. Pirozhkov;Tsuneomi Kawasaki;Tsuneomi Kawasaki;A. S. Pirozhkov;Kenta Suzuki;L. M. Chen;朝日 透;L. M. Chen;松村友香里;L. M. Chen;鈴木健太;A. S. Pirozhkov;Lutz Francois;A. S. Pirozhkov;高橋悠太郎;A. S. Pirozhkov;西山大亮;福田 祐仁;朝日 透;高橋悠太郎;Y. Fukuda
• 通讯作者: Y. Fukuda

Generating 1020W/cm2 and higher with the help of wavefront correction

借助波前校正产生 1020W/cm2 及更高功率

• 发表时间: 2005
• 作者: K. Soai;T. Kawasaki;I. Sato;T. Shibata;S. V. Bulanov;K. Soai;S. V. Bulanov;そ合憲三;そ合憲三;福田 祐仁;そ合憲三;Y. Fukuda;そ合憲三;L. M. Chen;そ合憲三;L. M. Chen;そ合憲三;Y. Fukuda;そ合憲三;Y. Fukuda;そ合憲三;M. Mori;そ合憲三;M. Mori;畑瀬國彦;Y. Fukuda;菅藤有将;Y. Fukuda;そ合憲三;S. V. Bulanov;そ合憲三;J. Ma;Kenso Soai;J. Ma
• 通讯作者: J. Ma