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Proceedings Paper

Dynamic measurement of diffuse reflectivity
Author(s): ZeRen Li; Xiaofeng Cheng; Yanzhu Zhou; Xianxiang Tan; Ruchao Ma
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Paper Abstract

For studying the diffuse reflectivity of tungsten target surface, a series of experiments of symmetric flat impact between copper flyer and tungsten target has been done on a two stage light gas gun. Argon ion laser with wavelength 514.5 nm was used as light source to illuminate testing point. The laser light scattered from target was collected by a lens and the light power fore-and-after shock compression was measured. The reflectivity of shock- compressed tungsten target surface could be derived through the power of scattered laser light. In these experiments, the shock pressure in tungsten target was limited from 85 GPa to 250 GPa, five pressure points being chosen. The experimental results show: shock compression makes the reflecting ability of target surface lower, and when the shock pressure is higher than 165 GPa, the reducing speed apparently becomes lower. In addition, the experimental conditions are described in this paper, and the results also are discussed.

Paper Details

Date Published: 28 May 1997
PDF: 5 pages
Proc. SPIE 2869, 22nd International Congress on High-Speed Photography and Photonics, (28 May 1997); doi: 10.1117/12.273360
Show Author Affiliations
ZeRen Li, Southwest Institute of Fluid Physics (China)
Xiaofeng Cheng, Southwest Institute of Fluid Physics (China)
Yanzhu Zhou, Southwest Institute of Fluid Physics (China)
Xianxiang Tan, Southwest Institute of Fluid Physics (China)
Ruchao Ma, Southwest Institute of Fluid Physics (China)


Published in SPIE Proceedings Vol. 2869:
22nd International Congress on High-Speed Photography and Photonics
Dennis L. Paisley; ALan M. Frank, Editor(s)

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