NASA NTRS · 19730050613
In-flight detection of small hypervelocity particles.
Abstract
A technique is described in which small (25-micron) hypervelocity (10-km/sec) in-flight particles can be detected in the presence of high background noise. The system is based on a spatial filtering principle whereby spurious noise effects are reduced by use of a beam stop in the entrance aperture of the system and a bandpass filter in the transform plane. A theoretical analysis of the system is presented, and some experimental results are obtained by detecting in-flight hypervelocity particles generated by an exploding lithium wire electrothermal accelerator.
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Robinson, D. M., Goad, J. H., Chu, W. P.. 1973-07-01. In-flight detection of small hypervelocity particles.. https://ntrs.nasa.gov/citations/19730050613
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