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22 June 1999 Diagnostics of superfast jets with profile streak technique
Manfred Held
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Proceedings Volume 3516, 23rd International Congress on High-Speed Photography and Photonics; (1999) https://doi.org/10.1117/12.350541
Event: Twenty-Third International Congress on High-Speed Photography and Photonics, 1998, Moscow, Russian Federation
Abstract
In so-called cavity charges superfast jets with tip velocities in the range of 25 km/sec are found. Such fast jets are strongly eroding by the perforation of the ambient air. The ablated jet material forms a tube around the jet and is optically protecting the core of the jet itself. With tests, where the jet is elongating in vacuum, this problem does not exist or is drastically reduced. To get enough space resolution, the profile streak technique (PST) was used to obtain the diameter of the stretching jet as a function of the passing time or with respect to its velocity gradient. With this special diagnostic technique the radius of these superfast jets was measured the first time. The used test method with typical results together with the applied evaluation technique will be described.
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Manfred Held "Diagnostics of superfast jets with profile streak technique", Proc. SPIE 3516, 23rd International Congress on High-Speed Photography and Photonics, (22 June 1999); https://doi.org/10.1117/12.350541
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KEYWORDS
Diagnostics
Time metrology
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