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The light polarization technique was applied to the generalized line‐reversal method in order to improve the inherently restricted resolution characteristics found in the conventional method using a chopper or a knife wedge, which discriminate the reference lamp light from the gaseous emission either temporally or spatially, respectively. In the proposed method, each of the lights was linearly and perpendicularly polarized and was detected through the same spatiotemporal optical path. The applicability of this method to measure the hot gaseous temperature was confirmed experimentally in a shock tube MHD power generation system.
Published in:
Review of Scientific Instruments
(Volume:53
,
Issue:
11
)
Date of Publication: Nov 1982