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摘要: 用双灵敏度VISAR干涉仪测量了在冲击波和爆轰波驱动下,铜飞片自由面的连续速度。干涉仪有两种条纹常数,每个条纹常数和相应的条纹计数同时用于产生一个速度历史。通过比较两个速度历史并结合其它条件,可以确定由于光电倍增管带宽限制而引起的条纹丢失的具体数目。Abstract: A double-sensitivity VISAR was used to measure flyer velocity. Through comparing two velocity histories and combining with physical consideration, it is possible to guess how many fringes were lost due to bandwidth limitation of VISAR.
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Key words:
- VISAR /
- continuous velocity /
- double-sensitivity
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Barker L M, Hollenback R E. Laser Interferometer for Measuring High Velocities of Any Reflecting Surface [J]. J Appl Phys, 1972, 43: 4669. Hemsing W F, Velocity Sensing Interferoraeter (VISAR) Modification [J]. Rev Sci Instrum, 1979, 50: 73. Tollier L. Fabbro R. Study of the Laser-Driven Spallation Process by the VISAR Interferometry Technique [J]. J Appl Phys, 1998, 83: 1231. 陈光华, 李泽仁. 激光干涉测速技术在爆轰实验中的应用 [J]. 爆轰波与冲击波, 1999, (2): 79. 李泽仁, 李幼平. 光纤传输速度干涉仪 [J]. 爆炸与冲击, 1994, 14(2): 175. -
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