2011 Fiscal Year Final Research Report
MEASUREMENT OF ELECTROMAGENTIC RADIATION FROM SOLITONS IN PLASMA
| Project/Area Number |
21604008
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| Research Category |
Grant-in-Aid for Scientific Research (C)
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| Allocation Type | Single-year Grants |
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| Section | 一般 |
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| Research Field |
Quantum beam science
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| Research Institution | Japan Atomic Energy Agency |
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Principal Investigator |
KANDO Masaki 独立行政法人日本原子力研究開発機構, 量子ビーム応用研究部門, 研究主幹 (50343942)
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| Project Period (FY) |
2009 – 2011
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| Keywords | 高強度レーザー / レーザープラズマ相互作用 / ソリトン / テラヘルツ / 赤外光 |
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| Research Abstract |
We investigated solitons that are formed via the interaction of intense laser pulses with gaseous plasma. By focusing a 800-nm laser pulse onto a helium gas-jet with a relativistic intensity, electromagnetic(EM) radiation with an infrared region(2-14μm) and a teraherz region(10GHz-40THz) were observed. Since the EM radiation has a same polarization direction as the laser, it is inferred that the radiation comes from solitons. In addition, we observed scattered radiation in a 90degree shadowgraph with a counter-propagating probe pulse. The scattered radiation becomes intense as the pump laser propagates. The radiation seems to be the scattered counter-propagating probe pulse by the soliton density walls.
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