Measurement of the Velocity of Particles Emerging from a Plasma Flame by High-Speed Cine-Streak Photography

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Publisher: SMPTE
Doc Type: Journal Article
Article Type: research-article
Abstract: Glass beads of 30- to 140-μm diameter and 50 to 100 m/s velocity emerging from a plasma flame (10,000 K) were photographed using a 16mm high-speed ciné camera in streak mode. The combined radiation from the hot particles and that reflected from the flame provided sufficient light intensity using 400 ASA reversal film. The narrow depth of field (±5 mm) was investigated using an illuminated spinning disc having a hole the same size as the particle. A stereo streak system was devised for particle location in two dimensions. Ghost images caused by internal lens reflection were identified on the film. A simple system for film analyzing was built and a semiautomatic electrical disc analog for measuring streak angle was devised and tested. Overall optical resolution was sufficient to enable particle accelerations (2,000 g) to be estimated from the changes of streak angle across the film.
Publication Date: 1971-12-01
DOI: 10.5594/J05687
Link: https://doi.org/10.5594/J05687
Author(s): J. A. Lewis, W. H. Gauvin

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J. A. Lewis and W. H. Gauvin; Measurement of the Velocity of Particles Emerging from a Plasma Flame by High-Speed Cine-Streak Photography, Journal of the SMPTE ( Volume: 80, Issue: 12, December 1971); SMPTE, 1971. Available at https://doi.org/10.5594/J05687

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J. A. Lewis and W. H. Gauvin; Measurement of the Velocity of Particles Emerging from a Plasma Flame by High-Speed Cine-Streak Photography, Journal of the SMPTE ( Volume: 80, Issue: 12, December 1971); SMPTE, 1971. Available at https://doi.org/10.5594/J05687

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<span class="citation">J. A. Lewis and W. H. Gauvin; <cite>Measurement of the Velocity of Particles Emerging from a Plasma Flame by High-Speed Cine-Streak Photography</cite>, Journal of the SMPTE ( Volume: 80, Issue: 12, December 1971); SMPTE, 1971. Available at <a href="https://doi.org/10.5594/J05687" target="_blank" rel="noopener">https://doi.org/10.5594/J05687</a></span>

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<li>
J. A. Lewis and W. H. Gauvin; <cite id="bib-10-5594-j05687">Measurement of the Velocity of Particles Emerging from a Plasma Flame by High-Speed Cine-Streak Photography</cite>, Journal of the SMPTE ( Volume: 80, Issue: 12, December 1971); SMPTE, 1971
<span class="doi">10.5594/J05687</span>
</li>