Observation of THz radiation interaction between relativistic ionization fron and periodic electrostatic field

相对论电离与周期性静电场之间太赫兹辐射相互作用的观测

• 批准号: 11680477
• 负责人: YUGAMI Noboru
• 金额: $ 2.3万
• 依托单位: Ustunomiya University
• 依托单位国家: 日本
• 项目类别: Grant-in-Aid for Scientific Research (C)
• 财政年份: 1999
• 资助国家: 日本
• 起止时间: 1999 至 2000
• 项目状态: 已结题
• 来源: https://kaken.nii.ac.jp/grant/KAKENHI-PROJECT-11680477/
• 关键词: plasma; ioniztation front; accelerator; frequency upshift; blue shift; DARC; photon accelerator

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.

我们利用4ω^0的Nd: YAG激光，脉冲持续时间约6 ns，对“DC - AC辐射转换器”进行了实验研究。在静电场与相对论性电离锋的相互作用实验中观察到电磁波的产生。发射的微波脉冲频率（~ 6ns）在9.5 GHz ~ 14.1 GHz之间。输出信号强度与直流偏置电压成正比，功率为2.3。发射的辐射场沿静电场方向极化。发射辐射的脉冲持续时间与电离激光的脉冲持续时间一样长。这表明脉冲持续时间在很大程度上取决于激光的电离过程。

项目成果

Hong Gao, Takeshi Higashiguchi, Noboru Yugami, Toshihiko Niiyama, Shigeo Sasaki, Hiroaki Ito and Yasushi Nishida: "Further Frequency Upshift in DC to AC Radiation Converter by Perpendicular DC Magnetic Field"Jpn.J.Appl.Phys.. 39. L812 (2000)

Hong Gau、Takeshi Higashiguchi、Noboru Yugami、Toshihiko Niiyama、Shigeo Sasaki、Hiroaki Ito 和 Yasushi Nishida：“通过垂直直流磁场进一步提高直流到交流辐射转换器的频率”Jpn.J.Appl.Phys.. 39. L812 (

T.Higashiguchi et.al.: "Experimental observation of further frequency upshift from DC to AC Radiation Converter"Phys.Rev.Lett.. 85. 4542-4545 (2000)

T.Higashiguchi 等人：“从直流到交流辐射转换器的进一步频率上移的实验观察”Phys.Rev.Lett.. 85. 4542-4545 (2000)

E.Takahashi, et.al: "Laser Wakefield in Low Density Plasma"J.Phys.Soc.Jpn.. 69. 3266-3275 (2000)

E.Takahashi 等人：“低密度等离子体中的激光韦克场”J.Phys.Soc.Jpn.. 69. 3266-3275 (2000)

T.Higashiguchi et. Al: "Emission of Short Microwave Pulse Radiation by Interaction between Periodic Static Electric Field and Relativistic Ionization Front"Jpn.J.Appl.Phys.. 38. L527-L530 (1999)

T.Higashiguchi 等。

T.Higashiguchi, N.Yugami, H.Gao, T.Niiyama, S.Sasaki, E.Takahashi, H.Ito and Y.Nishida: "Experimental observation of further frequency upshift from DC to AC Radiation Converter"Phys.Rev.Lett.. 85. 4542 (2000)

T.Higashiguchi、N.Yugami、H.Gao、T.Niiyama、S.Sasaki、E.Takahashi、H.Ito 和 Y.Nishida：“从直流到交流辐射转换器进一步频率提升的实验观察”Phys.Rev。