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Proceedings Paper

Short-duration spark source for color schlieren methods
Author(s): Seiji S. Miyashiro; Harald Kleine; Hans Groenig
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Paper Abstract

Low-jitter reliable short-duration spark sources have been developed for application in color schlieren methods. With an Xe-filling of a previously used nanosecond spark source (NANOSPARK 1400), the light quantity could be increased up to tenfold while the pulse width rose up to 500 ns depending on gas pressure. When filled with air, the new extended version NANOSPARK 4000, which is about three times the size of the NANOSPARK 1400, exhibits pulse widths of 50 - 80 ns (FWHM) and BCP five times as large as the smaller version. With an Xe-filling, the light quantity is again magnified by a factor of ten, but also the pulse width goes up to 900 ns depending on gas pressure. These sources have adequately exposed customary ASA 400 film in various color schlieren experiments. Moreover they have been used in a shearing interferometer and in several monochrome visualization setups.

Paper Details

Date Published: 1 January 1993
PDF: 10 pages
Proc. SPIE 1801, 20th International Congress on High Speed Photography and Photonics, (1 January 1993); doi: 10.1117/12.145774
Show Author Affiliations
Seiji S. Miyashiro, Anan College of Technology (Japan)
Harald Kleine, Technical Univ. of Aachen (Germany)
Hans Groenig, Technical Univ. of Aachen (Germany)

Published in SPIE Proceedings Vol. 1801:
20th International Congress on High Speed Photography and Photonics
John Marks Dewey; Roberto G. Racca, Editor(s)

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