14 October 1997 Principle of soft x-ray moire deflectometry to visualize a flow field in a diesel combustion chamber
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Abstract
The technique based on Moire deflectometry with soft x-ray laser beam has been demonstrated by the research group of D. Ress in the research of plasma produced by laser. We apply this method to visualize the flow field in diesel combustion chamber, and it is also a new application in the world. When a beam of collimated light passes through the flow field, the index-of-refraction gradient in the plasma bends the rays through an angle. A Moire pattern is created when a probe beam is passed through a pair of rotationally offset (angle (theta) ) 1D rulings consisting of evenly spaced opaque and transmissive stripes. By measuring the fringe shift we can get the information of flow field.
© (1997) COPYRIGHT Society of Photo-Optical Instrumentation Engineers (SPIE). Downloading of the abstract is permitted for personal use only.
Haihang You, Dapeng Yan, Zhengdong Wang, Anzhi He, "Principle of soft x-ray moire deflectometry to visualize a flow field in a diesel combustion chamber", Proc. SPIE 3157, Applications of X Rays Generated from Lasers and Other Bright Sources, (14 October 1997); doi: 10.1117/12.279420; https://doi.org/10.1117/12.279420
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