| 激光产生蒸汽羽的干涉研究 |
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| 引用本文： | 袁永华 刘常龄. 激光产生蒸汽羽的干涉研究[J]. 高压物理学报, 1992, 6(1): 23-29 |
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| 作者姓名： | 袁永华 刘常龄 |
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| 作者单位： | 中国工程物理研究院流体物理研究所，中国工程物理研究院流体物理研究所，中国工程物理研究院流体物理研究所，中国工程物理研究院流体物理研究所 成都523信箱 610003，成都523信箱 610003，成都523信箱 610003，成都523信箱 610003 |
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| 摘 要： | 根据拍摄1.06 μm长脉冲钕玻璃激光与LY12铝靶耦合产生蒸汽羽的干涉分幅照片，测出在t<50 μs空气冲击波速度约为473 m/s而蒸汽羽阵面扩散速度约为162 m/s。运用蒸汽羽等离子体的有关热力学特性方程组，得到蒸汽羽等离子体的电子密度、电子温度、电离度和吸收系数的最大值分别为Ne≈3.1×1017 cm-1，T≈6 096 K，η≈0.014，α(1.06μm)≈0.03 cm-1的结果。
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| 关 键 词： | 激光与物质相互作用 等离子体诊断 |
| 收稿时间： | 1991-12-02; |
INTERFERENCE DIAGNOSIS OF LASER INDUCED VAPOR PLUME |
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| Yuan Yonghua,Liu Changling,Gui Yuanzheng,Zhang Ning. INTERFERENCE DIAGNOSIS OF LASER INDUCED VAPOR PLUME[J]. Chinese Journal of High Pressure Physics, 1992, 6(1): 23-29 |
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| Authors: | Yuan Yonghua Liu Changling Gui Yuanzheng Zhang Ning |
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| Affiliation: | Southwest Institute of Fluid Physics, Chengdu 610003, China |
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| Abstract: | Characterizations of the vapor plume from LY12 aluminum target irradiated by a focused normal mode pulsed Nd: glass laser beam have been studied by using of a plate shearing interferometer and the high speed photography. The frame photos show that the speed of shock wave in the air is bout 473 m/s, the vapor plume front is about 162 m/s. By using the Abel inversion and Saha equations to analyze the interferogram of the vapor plume, based on electron density is deduced to be about 3.1×1017 cm-1, the temperature about 6 096 K, iconicity about 0.014, and optic absorption about 0.03 cm-1. |
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| Keywords: | Laser interactions with materials plasma diagnos. |
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