LSD波点燃和初始阶段传播的光学干涉研究

基金项目:

霍英东教育基金会基金

详细信息

Investigation of ignition and propagation features of laser-supported-detonation wave using interference pattern

摘要: 本文首先从动力学出发分析了LSD波点燃过程,导出了LSD波速度、压力等物理量表达式.用马赫-曾德尔干涉仪同步研究了Nd:YAG激光与铝靶表面相互作用过程,首次获得了LSD波点燃和初始阶段传播的系列干涉图象,为LSD波理论模型研究提供了可靠实验数据.
- LSD波 /
- 激光等离子体 /
- 光学干涉仪 /
- 高功率激光
Abstract: According to aerdynamics,ignition process of the laser-supported-detonation (LSD)wave is analyzed and the expressions of the propagation speed, pressure and internal energy of laser-supported-detonation (LSD) wave are derived. The interaction of Nd:YAG laser beam and a pure Al targetplate is experimentally investigated with a Mach-Zehnder interferometer, and the series of interferograms of ignition and propagation process of LSD wave are abtained. The propagation speeds obtained from the theoretical calculation and experimental results are 2.54×104 m/s and 2.2×104m/s at the moment of 20ns time delay, respectively. The time variation curve of the propagation speed of LSD wave and the distribution of the electron desity in plasma are measured. These experimental results are use full to theresearch on the theoretical model of LSD wave.
- LSD wave /
- laser plasma /
- optical interferometer /
- high-power laser

[1]	Maher W E, Hall R B. J A P, 1975;46(2):761
[1]	Maher W E, Hall R. B. Johnson R R. J A P. 1974:45(5):2138
[2]	Waltery C T.,Barnes R H, Beverly R E. J A P, 1978;49(5);2937
[3]	Ni X W, Lu 1, He A Z. Opt Common, 1989;74(3):185
[4]	Mckay J A, Bleach R D. Hall R B. J A P. 1979;50(5):3231

1.	王卉，刘庆菊，栾云霞，贾文珅. 高光谱成像技术在草莓品质检测中的应用. 食品工业. 2025(01): 138-142 . 百度学术
2.	杨洋，徐熙平，薛航，张宁，张越，索科. 基于SPA-PSO-BP的花生高光谱图像分类方法研究. 激光技术. 2024(04): 556-564 . 本站查看