| 线状聚焦激光与金属作用的离子速度分布 |
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| 引用本文： | 孙岚 徐至展. 线状聚焦激光与金属作用的离子速度分布[J]. 光学学报, 1989, 9(10): 88-892 |
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| 作者姓名： | 孙岚 徐至展 |
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| 作者单位： | 中国科学院上海光学精密机械研究所(孙岚，张燕珍)，中国高等科学技术中心凝聚态与辐射物理中心(徐至展) |
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| 摘 要： | 本文报道了利用法拉第筒飞行时间法进行的离子测量.通过比较高功率激光线状聚焦和点状聚焦在平面金属靶上产生的离子发射特性,总结出离子速度分布和激光辐照密度的定标规律,以及离子速度分布的空间各向异性.实验是在上海光机所钕玻璃激光装置上进行的,激光束的波长为1.06μm,脉宽为300ps,辐照密度为10~(12)～10~(14)W/cm~2.
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| 关 键 词： | 线状聚焦 激光 离子速度分布 |
| 收稿时间： | 1988-07-02 |
Ion velocity distribution study of line-focused laser irradiation on foils |
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| SUN LAN,Xu ZHIZHAN,ZHANG YIANZHEN. Ion velocity distribution study of line-focused laser irradiation on foils[J]. Acta Optica Sinica, 1989, 9(10): 88-892 |
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| Authors: | SUN LAN Xu ZHIZHAN ZHANG YIANZHEN |
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| Abstract: | We report the ion measurement of time-of-flight with Faraday cup and the ion energy with a simple analytic model involving an isothermal rarefaction. The targets were polished glass coated with 100A to 1μm of Al and Au foils. Irradiance was varied in the range 1012 to 1014 W/cm2 with constant laser power and variable focal size. Deductions include the scaling relationship of ion velocity at λ = 1.06μm with different focal size, and the anisotropic distributions have been clearly observed. |
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| Keywords: | line-focused laser distribution of ion velocity anisotropy of ion emission. |
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