Laser induced ultra-intense shock waves in relativistic regime
Laser induced ultra-intense shock waves in relativistic regime
批准号:
09490021
负责人:
TANAKA Kazuo a.
金额:
$7.55万
依托单位:
依托单位国家:
日本
项目类别:
Grant-in-Aid for Scientific Research (B)
财政年份:
1997
资助国家:
日本
项目状态:
已结题
起止时间:
1997 至 1999
中文摘要
当用超高强度激光照射材料时,产生的光压力达到千兆巴。通过利用这种激光束的特性来测量材料状态,并且关于状态方程,它有可能产生高速电射流并在等离子体中穿孔。与物态方程相关,首次提出了多层飞片的物态方程数据获取方法,并作为一种激光等离子体相互作用现象,将超强激光聚焦到微小的焦点上,观察到稳定的自聚焦现象。这些知识为验证激光聚变快速点火的新方法提供了重要的基础物理依据。在国际上也得到了很高的评价。它是基于超高强度激光束的光压力加速快电子。首次观察到了4mm长度范围内的射流现象。它可以成为天体物理和高速点火的重要基础数据。
英文摘要
Generating light pressure force reaches the giga bar, when the material is irradiated with the ultra high-strength laser. The material condition is measured by utilizing characteristics of such laser beam, and it is possible that it generates the high-speed electrojet and perforates in the plasma, concerning the state equation. Related to Equation of State, multilayered flyer was demonstrated for the first time to establish the method for obtaining the state equation data.As a laser plasma interaction phenomena, focusing ultraintense laser light into a tiny focus, a stable self focusing was observed. This knowledge supports important basic physics for the new method verification of fast ignition of the laser fusion. The high evaluation was got even in the world. It is based on the fast electron accelerated by light pressure force of ultra high-strength laser beam. The jet phenomenon over the 4mm length was observed for the first time. It can become astrophysics and important basic data of the high-speed ignition.
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K.A. Tanaka et al.: "Performance Comparison of Self-focusing with 1053- and 351-nm laser pulses"Physical Review E. 60・3. 3283-3288 (1999)
K.A. Tanaka 等人:“1053 和 351 nm 激光脉冲的自聚焦性能比较”Physical Review E. 60・3 (1999)
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H. Ruhl and K. A. Tanaka et al: "Collimated Electron Jets by Intense Laser-Beam-Plasma Surface Interaction under Oblique Incident"Physical Review Letters. Vol. 82, No. 4. 743-746 (1999)
H. Ruhl 和 K. A. Tanaka 等人:“倾斜入射下强激光束-等离子体表面相互作用的准直电子射流”物理评论快报。
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R. Kodama and K. A. Tanaka: "Measurements of laser-hole boring into overdense plasmas using x-ray laser refractometry (invited)"Review of Scientific Instruments. Vol.70, No. 1. 543-548 (1999)
R. Kodama 和 K. A. Tanaka:“使用 X 射线激光折射法测量过密等离子体激光钻孔(特邀)”科学仪器评论。
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R. Kodama and K. A. Tanaka: "Long-Scale Jet Formation with Specularly Reflected Light in Ultraintense Laser-Plasma Interactions"Physical review Letters. Vol.84, No.4. 674-677 (2000)
R. Kodama 和 K. A. Tanaka:“超强激光-等离子体相互作用中镜面反射光的长尺度射流形成”物理评论快报。
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R.Kodama and K.A. Tanaka: "Measurements of laser-hole boring into overdense plasmas using x-ray laser refractometry (invited)"Review of Scientific Instruments. 70 ・ 1. 543-548 (1999)
R.Kodama 和 K.A. Tanaka:“使用 X 射线激光折射法测量过密等离子体的激光钻孔(特邀)”科学仪器评论 70 ・ 1. 543-548 (1999)
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