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Proceedings Paper

LIBS spectra of multi-component Al, Fe, Cu alloys and composite materials used for selected elements of armament and munition
Author(s): R. Ostrowski; W. Skrzeczanowski; A. Rycyk; K. Czyż; A. Sarzyński; M. Strzelec; K. Jach; R. Świerczyński
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Paper Abstract

Spectral investigations in the UV-VIS range of selected Al, Cu, and Fe alloys and composite materials were performed using LIBS technique. The investigated objects were typical rifle cartridges, mortars, rocket launchers and samples of different type steel, Cu and Al alloys, as well as composite materials of special chemical composition. Two Nd:YAG lasers were applied: a short 4 ns, 60 mJ Brio Quantel/BigSky laser (1064 nm) and a long pulse 200/400 (up to 1000) µs (~ 2/4 up to 10 J) laser (1064 nm) constructed at the Institute of Optoelectronics MUT.

This spectrochemical analysis was possible for Al, Cu, and Fe alloys objects for both lasers, and in case of composites only if the samples were irradiated by short laser pulse since in the experiment with the long pulse, all composite materials spectra, in general, were very similar to each other – they imitated a grey/black body spectra. For metal alloys in experiments with a short laser pulse only atomic spectra were observed while for long microsecond laser pulses molecular transitions have been registered for Al alloys.

Electron temperatures of plasma created on different materials for short and long laser pulses were found on the base of Boltzmann plots. Temperatures are clearly higher for plasmas generated with a short laser pulse which results from much higher laser power density on the sample surface for short pulse and not from fluence which is 20-40 times larger for long pulse.

Paper Details

Date Published: 26 October 2017
PDF: 13 pages
Proc. SPIE 10440, Optical Materials and Biomaterials in Security and Defence Systems Technology XIV, 1044007 (26 October 2017); doi: 10.1117/12.2278332
Show Author Affiliations
R. Ostrowski, Military Univ. of Technology (Poland)
W. Skrzeczanowski, Military Univ. of Technology (Poland)
A. Rycyk, Military Univ. of Technology (Poland)
K. Czyż, Military Univ. of Technology (Poland)
A. Sarzyński, Military Univ. of Technology (Poland)
M. Strzelec, Military Univ. of Technology (Poland)
K. Jach, Military Univ. of Technology (Poland)
R. Świerczyński, Military Univ. of Technology (Poland)

Published in SPIE Proceedings Vol. 10440:
Optical Materials and Biomaterials in Security and Defence Systems Technology XIV
Roberto Zamboni; François Kajzar; Attila A. Szep; Katarzyna Matczyszyn, Editor(s)

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