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LASER-INDUCED INCANDESCENCE MEASUREMENTS OF SILICON AND COPPER NANOPARTICLES: SPECTROSCOPIC MODEL

DOI: 10.1615/RAD-16.200
pages 160-167

Kyle J. Daun
Department of Mechanical and Mechatronics Engineering, University of Waterloo 200 University Ave. W, Waterloo, ON, N2L 3G1, Canada

Jan Menser
University of Duisburg-Essen 199 Carl-Benz Strasse, Duisburg, Germany

Raphael Mansmann
University of Duisburg-Essen 199 Carl-Benz Strasse, Duisburg, Germany

Thomas Dreier
University of Duisburg-Essen 199 Carl-Benz Strasse, Duisburg, Germany

Christof Schulz


Abstract

Interpreting laser-induced incandescence (LII) measurements on synthetic nanoaerosols requires a spectroscopic model that relates spectral incandescence to the temperature of the laser energized nanoparticles. We present models for molten silicon and copper nanoparticles, which are evaluated through extinction and incandescence measurements on nanoaerosols. Measurements on molten silicon nanoparticles are consistent with the Drude model, while molten copper nanoparticles do not show the expected features associated with an interband cutoff at approximately 2 eV.

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