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Novel standoff detection system for the classification of chemical and biological hazardous substances combining temporal and spectral laser-induced fluorescence techniques

Gebert, Florian and Kraus, Marian and Fellner, Lea and Walter, Arne and Pargmann, Carsten and Grünewald, Karin and Duschek, Frank (2017) Novel standoff detection system for the classification of chemical and biological hazardous substances combining temporal and spectral laser-induced fluorescence techniques. 1st scientific international conference on CBRNE, 22.05-24.05.2017, Rom.

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Abstract

In the last decades the potential risk of human exposure to chemical and biological hazardous material is increasing, due to the technological progress and the demographic growth. Therefore, the demand for a detection system which identifies possible threats from a distance is increasing. In this scope, we present a novel experiment investigating the classification prospects of chemical and biological samples at stand-off distances. The system utilizes the spectral and temporal behavior of laser induced fluorescence excited with laser pulses of two different UV excitation wavelength. Furthermore fast data acquisition using a relatively small spectral resolution of 32 Channels per excitation wavelength is investigated. The fluorescence lifetime of most chemical and biological samples lies between 0.1ns to several 10ns and may help to classify the investigated sample. In our approach we use a small part of the fluorescence signal of for distinct spectral channels of the detection system to investigate the possibilities of discrimination on the basis of temporal fluorescence information. First measurements of the fluorescence’s temporal behavior of suspensions as well as a comparison of the new setup with our setup utilizing an iCCD camera with 1096 channels for data acquisition are presented.

Item URL in elib:https://elib.dlr.de/124736/
Document Type:Conference or Workshop Item (Speech)
Title:Novel standoff detection system for the classification of chemical and biological hazardous substances combining temporal and spectral laser-induced fluorescence techniques
Authors:
AuthorsInstitution or Email of AuthorsAuthors ORCID iD
Gebert, Florianflorian.gebert (at) dlr.dehttps://orcid.org/0000-0003-4009-549X
Kraus, MarianMarian.Kraus (at) dlr.dehttps://orcid.org/0000-0002-5385-9420
Fellner, Lealea.fellner (at) dlr.dehttps://orcid.org/0000-0002-1359-0260
Walter, Arnearne.walter (at) dlr.dehttps://orcid.org/0000-0002-4377-9152
Pargmann, CarstenCarsten.Pargmann (at) dlr.dehttps://orcid.org/0000-0003-3688-6360
Grünewald, Karinkarin.gruenewald (at) dlr.dehttps://orcid.org/0000-0003-0922-2307
Duschek, FrankFrank.Duschek (at) dlr.dehttps://orcid.org/0000-0002-1809-0257
Date:24 May 2017
Refereed publication:Yes
Open Access:Yes
Gold Open Access:No
In SCOPUS:No
In ISI Web of Science:No
Status:Published
Keywords:Light induced Fluorescence, Fluorescence lifetime, standoff detection, chemical and biological agents
Event Title:1st scientific international conference on CBRNE
Event Location:Rom
Event Type:international Conference
Event Dates:22.05-24.05.2017
Organizer:Universität Tor Vergata Rom
HGF - Research field:Aeronautics, Space and Transport
HGF - Program:Aeronautics
HGF - Program Themes:fixed-wing aircraft
DLR - Research area:Aeronautics
DLR - Program:L AR - Aircraft Research
DLR - Research theme (Project):L - Laser Research and Technology, R - Vorhaben Optische Fernerkundung für sicherheitsrelevante Anwendungen
Location: Lampoldshausen
Institutes and Institutions:Institute of Technical Physics > Atmospheric Propagation and Effect
Deposited By: Gebert, Florian
Deposited On:07 Jan 2019 13:47
Last Modified:31 Jul 2019 20:22

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