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Flash soft radiography - its adapting to the study of breakup mechanisms of liquid jets into a high-density gas

Weiche Röntgenblitz-Radiographie und deren Anwendung auf die Untersuchung der Einspritzvorgänge von Flüssigkeitsstrahlen in ein dichtes Gas
 
: Krehl, P.; Warken, D.

Fraunhofer-Institut für Kurzzeitdynamik, Ernst-Mach-Institut -EMI-, Freiburg/Brsg.:
19th International Congress on High Speed Photography and Photonics '90. Proceedings
Freiburg/Brsg., 1990 (EMI Preprint)
12 pp. : Abb.,Tab.,Lit.
International Congress on High Speed Photography and Photonics <19, 1990, Cambridge>
English
Conference Paper
Fraunhofer EMI ()
chamber prepressure; contrast improvement; Einspritzvorgänge; flash soft x-ray generator; injection phenomena; jet breakup mechanism; Kammervordruck; Kontrastverbesserung; soft flash radiography; Strahlauflösung; weiche Röntgenblitz-Radiographie; weiche Röntgenblitzquelle

Abstract
Radiography of liquid fuel injection provides valuable information on the jet development, structure, propagation and disintegration which cannot be obtained optically, because often the jet core is hidden behind a curtain of spray droplets. Tests at increasing prepressures require thicker x-ray windows in the injection chamber which absorb already most of the transmitted soft x-rays. The technique encompasses a high-intensity flash soft x-ray generator with a pulse duration of 120 ns FWHM and a specially designed injection chamber. Various flash radiographs of liquid injection phenomena, taken at a prepressure of 1 and 100 bars, illustrate the achieved progress.

: http://publica.fraunhofer.de/documents/PX-14500.html