Laser Triggered Lightning Experiment-Understanding the Mechanism of Laser Induced Discharges-

激光触发闪电实验-了解激光诱导放电的机制-

• 批准号: 04452162
• 负责人: KAWASAKI Zen-Ichiro
• 金额: $ 4.22万
• 依托单位: OSAKA UNIVERSITY
• 依托单位国家: 日本
• 项目类别: Grant-in-Aid for General Scientific Research (B)
• 财政年份: 1992
• 资助国家: 日本
• 起止时间: 1992 至 1993
• 项目状态: 已结题
• 来源: https://kaken.nii.ac.jp/en/grant/KAKENHI-PROJECT-04452162/
• 关键词: UHF Waves; Interferometer; Winter Thunderstorm; Leader; Return Strokes; レーザー誘雷; プラズマチャンネル; 吸収・散乱特性; 雷予知技術

In 1992 we carried out experiments in a laboratory by using a high power CO_2 pulse Laser, of which peak power and energy are respectively one Giga Watts and 100 Joules, and a high voltage impulse generator. We could realize a 8.5 meters gap electric breakdown. The artificial 8.5meters electric breakdown is the longest one in the world. We also established a Z type electric breakdown by splitting a laser beam into three parts, which showed us that the lightning channel could be controlled by laser plasma. Following the success of laboratory experiments, we decided to carry out the field experiment to trigger lightning during the winter thunder storm occurrence. The place which we chose as the field experiment site was situated in the Wakasa district where was well-known as the winter thunder storm active area. The main objectives of this field experiment are studying the propagation features of Laser beam under precipitations and producing Laser plasma near the top of 50 meters lightning tower. We also study the influence of 50 meters tower to the electric fields which is originally formed by the electric charges in the thunder cloud. We concluded that the 50 meters tower enhances the electric fields nearly 100 times. The upward leaders could not be initiated.

1992年，我们在实验室用峰值功率为10亿瓦、能量为100焦耳的高功率CO_2脉冲激光器和高压脉冲发生器进行了实验。我们可以实现8.5米的间隙电击穿。8.5米的人工电击穿是世界上最长的电击穿。我们还建立了一个Z型电击穿模型，通过激光束的三束分裂，证明了闪电通道可以被激光等离子体控制。在实验室实验取得成功后，我们决定进行冬季雷暴发生时触发闪电的野外实验。我们选择的野外实验地点位于被称为冬季雷暴活跃区的若狭地区。本野外实验的主要目的是研究激光在大气降水中的传输特性和在50米避雷塔顶部附近产生激光等离子体。研究了50米铁塔对雷云中电荷形成的电场的影响。我们的结论是，50米高的塔将电场增强了近100倍。向上的领导者不能被启动。

项目成果

Z.I,Kawasaki et.al.: "SAFIR Operation and Evaluation of its Rerformance" Geophysical Ressearch Letters. 21(印刷中). (1994)

Z.I, Kawasaki 等人：“SAFIR 操作及其改造评估”地球物理研究快报 21（出版中）。

E.Fujiwara: "“Preliminary experiments of laser induced lightning"" Eleventh International Wroclow Symposium on Electro-Magnetic Compatibility,Wroclow,Poland.(1992). (1992)

E. Fujiwara：“激光感应闪电的初步实验”，第十一届国际弗罗茨洛电磁兼容性研讨会，波兰弗罗茨洛（1992 年）。

中村光一,河崎善一郎: "新誘雷技術-実雷試験への期待が高まるるレーザ誘雷と水誘雷" 電気学会論文誌B. 113. 839-844 (1993)

Koichi Nakamura、Zenichiro Kawasaki：“新的雷电感应技术 - 激光雷电和水雷增加了对实际雷电测试的期望” 日本电气工程师学会汇刊 B. 113. 839-844 (1993)

D.Wang,T.Usio,Z.I.Kawasaki: "The Study of the Possibility of Lightning Triggering by Means of Laser" Journal of Atmospheric Electricity. 14. 49-55 (1994)

D.Wang，T.Usio，Z.I.Kawasaki：“激光触发闪电可能性的研究”大气电学杂志。

Wang Dao Hong: "The Study of the Possibility of Lightning Triggering by means of a Laser" J.Atmos.Electr.Vol.14. 49-55 (1994)

王道宏：“激光触发闪电可能性的研究”J.Atmos.Electr.Vol.14。