elib
DLR-Header
DLR-Logo -> http://www.dlr.de
DLR Portal Home | Impressum | Kontakt | English
Schriftgröße: [-] Text [+]

Stand-off Detection at the DLR Laser Test Range Applying Laser-Induced Breakdown Spectroscopy

Duschek, Frank und Pargmann, Carsten und Handke, Jürgen (2010) Stand-off Detection at the DLR Laser Test Range Applying Laser-Induced Breakdown Spectroscopy. Security & Defence, 20.-23- Sep. 2010, Toulouse, Frankreich.

[img] PDF - Requires a PDF viewer such as GSview, Xpdf or Adobe Acrobat Reader
10kB

Kurzfassung

The DLR laser test range at Lampoldshausen allows for optical measurements under daylight conditions at distances up to 130 m. This infrastructure is very suitable for the development of stand-off detection systems of biological, chemical and explosive hazardous substances. In a first step, laser-induced breakdown spectroscopy (LIBS) has been introduced to this test site. A basic LIBS set-up and first LIBS spectra of selected samples are presented. A Nd:YAG laser beam was focussed by a Cassegrain type telescope onto different samples at distances exceeding 50 m. The light of the generated plasma plume was collected by a Newtonian telescope, and analyzed by a gated broadband CCD-spectrometer system. The Nd:YAG laser yields pulse energies up to 800 mJ at a wavelength of 1064 nm and a pulse width of 8 ns. Optionally the second and third harmonics can be extracted. LIBS spectra from 10 nm layers of gold on a silicon wafer were recorded. In addition, LIBS spectra from black powder were measured, and compared to the spectrum of potassium nitrate, which is a main component of black powder and shows very characteristic emission. LIBS spectra of the above samples have also been acquired with an excitation laser wavelength in the eye-safe region. Recorded spectra are measured as a function of the laser wavelength, pulse energy, and energy density on the target and are compared to the literature.

Dokumentart:Konferenzbeitrag (Vortrag)
Titel:Stand-off Detection at the DLR Laser Test Range Applying Laser-Induced Breakdown Spectroscopy
Autoren:
AutorenInstitution oder E-Mail-Adresse der Autoren
Duschek, FrankFrank.Duschek@dlr.de
Pargmann, CarstenCarsten.Pargmann@dlr.de
Handke, JürgenJuergen.Handke@dlr.de
Datum:2010
Status:akzeptierter Beitrag
Stichwörter:stand-off detection, laser-induced breakdown spectroscopy, LIBS, hazardous substances, warfare agents
Veranstaltungstitel:Security & Defence
Veranstaltungsort:Toulouse, Frankreich
Veranstaltungsart:internationale Konferenz
Veranstaltungsdatum:20.-23- Sep. 2010
Veranstalter :SPIE
HGF - Forschungsbereich:Verkehr und Weltraum (alt)
HGF - Programm:Luftfahrt
HGF - Programmthema:keine Zuordnung
DLR - Schwerpunkt:Luftfahrt
DLR - Forschungsgebiet:L - keine Zuordnung
DLR - Teilgebiet (Projekt, Vorhaben):L - Laserforschung und -technologie
Standort: Lampoldshausen
Institute & Einrichtungen:Institut für Technische Physik
Hinterlegt von: Dr.rer.nat. Frank Duschek
Hinterlegt am:22 Mär 2010 11:53
Letzte Änderung:06 Jul 2010 15:37

Nur für Mitarbeiter des Archivs: Kontrollseite des Eintrags

Blättern
Suchen
Hilfe & Kontakt
Informationen
electronic library verwendet EPrints 3.3.12
Copyright © 2008-2013 Deutsches Zentrum für Luft- und Raumfahrt (DLR). Alle Rechte vorbehalten.