Comparison of terahertz technologies for detection and identification of explosives

Download
2014-05-06
Beigang, Rene
Biedron, Sandra G.
Dyjak, Slawomir
Ellrich, Frank
Haakestad, Magnus W.
Huebsch, Daniel
Kartaloglu, Tolga
Ozbay, Ekmel
Ospald, Frank
Palka, Norbert
Puc, Uros
Czerwinska, Elzbieta
Sahin, Asaf B.
Sesek, Aleksander
Trontelj, Janez
Svigelj, Andrej
Altan, Hakan
van Rheenen, Arthur D.
Walczakowski, Michal
We present results on the comparison of different THz technologies for the detection and identification of a variety of explosives from our laboratory tests that were carried out in the framework of NATO SET-193 “THz technology for stand-off detection of explosives: from laboratory spectroscopy to detection in the field” under the same controlled conditions. Several laser-pumped pulsed broadband THz time-domain spectroscopy (TDS) systems as well as one electronic frequency-modulated continuous wave (FMCW) device recorded THz spectra in transmission and/or reflection.

Suggestions

Terahertz Time-Domain Study of Silver Nanoparticles Synthesized by Laser Ablation in Organic Liquid
Koral, Can; ORTAÇ, Bülend; Altan, Hakan (2016-07-01)
We report the investigation of laser-synthesized Ag nanoparticles (Ag-NPs) in an organic liquid environment by using terahertz time-domain spectroscopy (THz-TDS) technique. Colloidal Ag-NPs with an average diameter of 10 nm in two-propanol solution through nanosecond pulsed laser ablation were synthesized. THz-TDS measurements were performed on different volumetric concentration of Ag-NPs suspensions placed in 2-mm path length quartz cuvette. Due to the dispersive and highly absorptive nature of the nano li...
THz transmission and detection through glow discharge detectors
Cinar, K.; Altan, Hakan; Sahin, A. B. (2013-04-30)
The capability of low cost glow discharge detectors (GDDs) to detect terahertz (THz) radiation has drawn much attention recently. In order to employ them in applications such as THz imaging these studies have typically focused on the response of the GDD at specific frequencies. To better understand the spectral behavior of glow discharges, we have not only examined the response of the GDD at a specific frequency of 118 GHz, but also we examined the interaction mechanism of GDDs with THz radiation using tera...
Non-contact atomic force microscope (ncafm) operation in uhv using radiation pressure excitation of cantilever
Uysallı, Yiğit; Turan, Raşit; Yerci, Selçuk; Department of Physics (2016)
In this work a new method for excitation of Non-Contact Atomic Force Microscope (NCAFM) cantilevers by means of radiation pressure was developed and applied for NCAFM imaging for the first time in the world. Piezo excitation is the most common method of cantilever excitation in AFM devices. However, it has few drawbacks, sometimes spurious resonance peaks and non-ideal Lorentzian curves can be observed. Radiation pressure has earlier been used for calibration of AFM cantilevers but has never been used for i...
Performance of Automatic Scanning Microscope for Nuclear Emulsion Experiments
Güler, Ali Murat (2015-03-23)
The impressive improvements in scanning technology and methods let nuclear emulsion to be used as a target in recent large experiments. We report the performance of an automatic scanning microscope for nuclear emulsion experiments. After successful calibration and alignment of the system, we have reached 99% tracking efficiency for the minimum ionizing tracks that penetrating through the emulsions films. The automatic scanning system is successfully used for the scanning of emulsion films in the OPERA exper...
Experimental research on in-tube condensation under steady-state and transient conditions
Tanrikut, A; Yesin, O (2005-01-01)
In this research study, in-tube condensation in the presence of air was investigated experimentally at a heat exchanger of countercurrent type for different operating conditions. The test matrix for the steady-state condition covers the range of pressures P = 1.8 to 5.5 bars, vapor Reynolds numbers Re, = 45 000 to 94 000, and inlet air mass fraction values Xi = 0 to 52%. The effect of air manifests itself by a reduction in the local heat flux and the local heat transfer coefficient. The local heat transfer ...
Citation Formats
R. Beigang et al., “Comparison of terahertz technologies for detection and identification of explosives,” 2014, vol. 9102, Accessed: 00, 2020. [Online]. Available: https://hdl.handle.net/11511/38414.