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Updated: Aug 8, 2026
Emission Spectroscopic Boundary Layer Investigation during Ablative Material Testing in Plasmatron
Published on: June 9, 2016
Sensitive high-resolution white-light Schlieren technique with a large dynamic range for the investigation of
Alfred Vogel1, Ingo Apitz, Sebastian Freidank
1Institute of Biomedical Optics, University of Lübeck, Peter-Monnik Weg 4, D-23562 Lübeck, Germany. vogel@bmo.uni-luebeck.de
Abstract:
We developed a modified Hoffman contrast technique with a 12 ns pulsed incoherent extended white-light source that enables an easily interpretable visualization of ablation plumes with high resolution, a large dynamic range, and color information. By comparison, a conventional dark-field setup with a slitlike laser light source provides large sensitivity but a small dynamic range, and it is difficult to interpret the filtered images.
