2000 Fiscal Year Final Research Report Summary
Observation of THz radiation interaction between relativistic ionization fron and periodic electrostatic field
| Project/Area Number |
11680477
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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 |
プラズマ理工学
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| Research Institution | Ustunomiya University |
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Principal Investigator |
YUGAMI Noboru Utsunomiya University, Energy and Environmental Science, Associate Professor, 大学院・工学研究科, 助教授 (60220521)
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| Co-Investigator(Kenkyū-buntansha) |
ITO Hiroaki Utsunomiya University, Energy and Environmental Science Research Associate, 大学院・工学研究科, 助手 (70302445)
NISHIDA Yasushi Utsunomiya University, Energy and Environmental Science Professor, 大学院・工学研究科, 教授 (00005315)
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| Project Period (FY) |
1999 – 2000
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| Keywords | plasma / ioniztation front / accelerator / frequency upshift / blue shift / DARC / photon accelerator |
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| Research Abstract |
We have experimentally investigated "DARC (DC to AC radiation converter)" using 4ω^0 light of Nd : YAG laser with a pulse duration of〜6 ns. Electromagnetic wave generation has been observed in the interaction experiments between a static electric field and a relativistic ionization front. The frequency of the emitted microwave pulse (〜6 ns) ranges from 9.5 GHz to 14.1 GHz. The output signal intensity is proportional to the DC bias voltages with a power of 2.3. The emitted radiation field is polarized along the static electric field direction. The pulse duration of the emitted radiation is as long as that of the ionizing laser. This indicates that the pulse duration strongly depends on the ionizing process by the laser light.
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