Focusability evaluation of relativistic flying mirrors for ultrahigh intensity physics

2015 Fiscal Year Final Research Report

• Project/Area Number: 25287103
• Research Category: Grant-in-Aid for Scientific Research (B)
• Allocation Type: Partial Multi-year Fund
• Section: 一般
• Research Field: Atomic/Molecular/Quantum electronics
• Research Institution: Japan Atomic Energy Agency
• Principal Investigator: Kando Masaki 国立研究開発法人日本原子力研究開発機構, 原子力科学研究部門 量子ビーム応用研究センター, 研究主幹 (50343942)
• Co-Investigator(Kenkyū-buntansha): PIROZHKOV Alexander 国立研究開発法人日本原子力研究開発機構, 原子力科学研究部門 量子ビーム応用研究センター, 研究副主幹 (00446410)
• Co-Investigator(Renkei-kenkyūsha): KOTAKI Hideyuki 国立研究開発法人日本原子力研究開発機構, 原子力科学研究部門 量子ビーム応用研究センター, 研究主幹 (60354974) ; HAYASHI Yukio 国立研究開発法人日本原子力研究開発機構, 原子力科学研究部門 量子ビーム応用研究センター, 研究副主幹 (20360430)
• Project Period (FY): 2013-04-01 – 2016-03-31
• Keywords: 高強度レーザー / コヒーレントX線 / 飛翔鏡 / 高強度場科学 / 航跡波 / 航跡場 / レーザー・プラズマ相互作用 / 相対論的プラズマ

Outline of Final Research Achievements

In ulta-high field of focused laser beam vacuum breakdown is expected to happen theoretically but is hard to achieve experimentally. To approach such high fields, a relativistic flying mirror (RFM) was proposed. We have demonstrated some of the proof-of-principle of RFM. Within the scope of the current project we seek for the focusability improvements by RFM. We conducted RFM experiments and observed reflected light from the RFM at an extreme ultraviolet region. The source size of the RFM was smaller than 7.1 μm, which is approximately half of the previously measured value. In addition we have found a better spatial resolution method and shown that it is possible to measure with a resolution of 1μm. In order to improve stability, we tried to observe the RFM structure and have seen the RFM (actually nonlinear wake) with a short probe pulse.

Free Research Field

ビーム物理