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Proceedings Paper

Ultraviolet Imaging Of Hydrogen Flames
Author(s): George J. Yates; Mark Wilke; Nick King; Alex Lumpkin
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Paper Abstract

We have assembled an ultraviplet-sensitive intensified camera for observing hydrogen combustion by imaging the OH, A2Σ+ - x2II bandhead emissions near 309 nm. The camera consists of a quartz and CaF achromat lense-coupled to an ultraviolet image intensifier which is in turn fiber-coupled to a focus projection scan (FPS) vidicon. The emission band is selected with interference filters which serve to discriminate against background. The camera provides optical gain of 100 to 1000 and is capable of being shuttered at nanosecond speeds and of being framed at over 600 frames per second. We present data from observations of test flames in air at standard RS-170 video rates with varying background conditions. Enhanced images using background subtraction are presented. Finally, we discuss the use of polarization effects for further discrimination against sky background. This work began as a feasibility study to investigate ultraviolet technology to detect hydrogen fires for the NASA space program.

Paper Details

Date Published: 16 August 1988
PDF: 9 pages
Proc. SPIE 0932, Ultraviolet Technology II, (16 August 1988); doi: 10.1117/12.946900
Show Author Affiliations
George J. Yates, Los Alamos National Laboratory (United States)
Mark Wilke, Los Alamos National Laboratory (United States)
Nick King, Los Alamos National Laboratory (United States)
Alex Lumpkin, Los Alamos National Laboratory (United States)

Published in SPIE Proceedings Vol. 0932:
Ultraviolet Technology II
Robert E. Huffman, Editor(s)

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