JOURNAL ARTICLE
激光等离子体慢离子发射波形的双峰结构
Year: 1985 Journal: Science in China Series A-Mathematics Physics Astronomy & Technological Science (in Chinese) Vol: 15 (2)Pages: 171-177 Publisher: Science China Press
Abstract
本文采用1—3J,150ps宽频带与窄频带Nd玻璃激光辐照平面铝靶,靶面功率密度1—3×1014W/cm2. 当用窄频带激光打靶时,入射方向与靶面法线成24°,偏振在入射平面(即P偏振)在靶面法线方向放置Faraday筒,则观察到慢离子发射波形的双峰结构. 如入射光的偏振改为垂直于入射平面(即S偏振),仍然有双峰结构,与P偏振略有差别;如入射光方向垂直于靶面,Faraday筒放置在偏下与靶面法线成30°位置,则双峰结构很不明显. 若用宽频带激光进行同样试验,则双峰结构很不明显,文章分析了上述现象的物理机制,并用二组分等离子体绝热膨胀模型,计算了离子发射波形,与实验比较基本相符.
Keywords:
Psychology
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Topics
Magneto-Optical Properties and Applications
Physical Sciences → Engineering → Electrical and Electronic Engineering
Photorefractive and Nonlinear Optics
Physical Sciences → Physics and Astronomy → Atomic and Molecular Physics, and Optics
Photonic and Optical Devices
Physical Sciences → Engineering → Electrical and Electronic Engineering
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