Ultrafast observation of relativistic laser-plasma interactions by a femtosecond electron beam
| Project/Area Number |
24540537
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| Research Category |
Grant-in-Aid for Scientific Research (C)
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| Allocation Type | Multi-year Fund |
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| Section | 一般 |
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| Research Field |
Plasma science
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| Research Institution | Osaka University (2013-2014)
Kyoto University (2012) |
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Principal Investigator |
SHIGEKI Tokita 大阪大学, レーザーエネルギー学研究センタ, 講師 (20456825)
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| Project Period (FY) |
2012-04-01 – 2015-03-31
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| Project Status |
Completed (Fiscal Year 2014)
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| Budget Amount *help |
¥5,200,000 (Direct Cost: ¥4,000,000、Indirect Cost: ¥1,200,000)
Fiscal Year 2014: ¥1,560,000 (Direct Cost: ¥1,200,000、Indirect Cost: ¥360,000)
Fiscal Year 2013: ¥1,690,000 (Direct Cost: ¥1,300,000、Indirect Cost: ¥390,000)
Fiscal Year 2012: ¥1,950,000 (Direct Cost: ¥1,500,000、Indirect Cost: ¥450,000)
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| Keywords | レーザープラズマ / テラヘルツ / サブミリ波 / 超高速 / 高強度レーザー / レーザー加速 / 電子ビーム |
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| Outline of Final Research Achievements |
We demonstrated a novel time-resolved measurement technique using a laser-accelerated femtosecond electron beam for measuring transient electric and magnetic fields produced by intense ultrafast laser interactions with plasmas. A femtosecond electron beam was passed through near a metal wire, and its deflection angle was measured. As a result, we discovered that a high-intensity picosecond electromagnetic surface wave which propagate on the wire with a velocity very close to the speed of light can be produced. This results indicates that an energy of a laser pulse can be converted to an electromagnetic surface wave with the frequency range of sub-terahertz. This phenomenon can be applied to generate high-intensity terahertz waves.
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Report
(4 results)
Research Products
(24 results)
