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Proceedings Paper

Flash X-Ray Cinematography At Framing Rates Up To 4.10 7 Images/Sec: Application To Terminal Ballistics
Author(s): Francis Jamet; Francis Hatterer
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Paper Abstract

The two following cinematographic methods can be considered : 1. generation of an X-ray pulse train with a single X-ray tube. The deionization time between two discharges limits the upper value of the frame repetition rate ; 2. cineradiography with multiple tubes. The time interval has no lower limit, but errors can result from the parallax and this method is not suitable for the visualization of phenomena lacking axial symetry. We present a novel tube including four flash X-ray sources equally spaced by 20 mm only so that parallax can be neglected in most cases. The electrodes consist of four cathodes and an single anode on which deflectors are mounted in order to prevent the vapors produced in a discharge space from attaining the other discharge spaces. The shortest time interval separating two successive discharges is only limited by the X-ray pulse duration, i.e. 25ns. The novel flash X-ray tube is used in connection with four 500 kV, 60 J, Marx-surge generators. A dose of 1.94 μC/kg per pulse at 1 meter from the anode is reached. The frame recording method uses a fluorescent screen converting X-rays in light photons and a high speed electronic camera ("Imacon 790"). This new flash X-ray cinematographic device has been used for recording phenomena in terminal ballistics. Examples are given of frames showing the penetration of projectiles into a target.

Paper Details

Date Published: 9 August 1983
PDF: 4 pages
Proc. SPIE 0312, 1st European Conf on Cineradiography with Photons or Particles, (9 August 1983); doi: 10.1117/12.932928
Show Author Affiliations
Francis Jamet, Institut Franco-Allemand de Recherches de Saint-Louis (ISL) (France)
Francis Hatterer, Institut Franco-Allemand de Recherches de Saint-Louis (ISL) (France)

Published in SPIE Proceedings Vol. 0312:
1st European Conf on Cineradiography with Photons or Particles
Jacques J. Marilleau, Editor(s)

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