The Time Response Character of Two Types of Fiber-Optic Pin under Shock Wave Loading
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摘要: 对冲击波参数的测量开发了两种光纤探针，以满足强电磁环境和冲击压力较低的情况。一种是冲击自发光光纤探针，另一种是闪光隙光纤探针。这两种光纤探针分别利用融凝石英在受到冲击压缩时发光和氩气（或空气）隙在受到压缩时会产生很强的光辐射的机理研制而成的。自发光光纤探针在大于70 GPa冲击压力下，其信号上升时间在1~3 ns之间；闪光隙光纤探针在10～30 GPa的冲击压力下，其信号上升时间稳定在2~7 ns之间。Abstract: Two types of fiber-optic pin have been developed for measuring shock wave physics characters in strong electromagnetic environment and low shock pressure experiments. One is the shock self-luminescene fiber-optic pin, and the other is the flash-gap fiber-optic pin. The physical mechanism of the fiber-optic pins is the quartz and the argon (or air) gap can luminesce under shock compressed. The dynamic time response character of the fiber-optic pins have been tested under shock loading. The response time of self-luminescene fiber-optic pin signals are less than 3 ns, which obtained in experiments that shock pressure was higher than 70 GPa. The response time of flash-gap fiber-optic pin signals are between 2 ns and 7 ns under 10～30 GPa shock pressures.
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Key words:
- shock wave physics /
- fiber-optic pin /
- flash-gap /
- response time
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