Use of a Fiber Optic Probe for the Detection and Identification of Explosive Materials by Raman Spectroscopy PDF Download

Author: IP. Hayward
Publisher:
ISBN:
Category : Explosive
Languages : en
Pages : 2

View

Book Description
A fiber optic probe has been developed that allows Raman spectra to be acquired remotely from a spectrometer. This system has been used to acquire spectra from explosive materials. In this study we demonstrate that it is sufficiently sensitive to rapidly detect traces of PETN in fingerprints of Semtex-Hexplosive. Further development of similar systems will enable the detection and non-destructive identification of contraband materials in the field.

Author: Jehuda Yinon
Publisher: John Wiley & Sons
ISBN: 9780471983712
Category : Science
Languages : en
Pages : 316

View

Book Description
Das erste Buch, das forensische und umweltspezifische Aspekte von Explosivstoffen miteinander verbindet! Dieser Leitfaden für Polizei, Umwelt- und gerichtsmedizinische Labors und fortgeschrittene Studenten der einschlägigen Fachrichtungen beschäftigt sich mit dem Nachweis von Explosivstoffen in Luftfrachtgütern, Gepäck, Fahrzeugen, verdächtigen Personen sowie in Boden- und Wasserproben. (08/99)

Author: Richard J Weiss
Publisher: World Scientific
ISBN: 9814481890
Category : Science
Languages : en
Pages : 405

View

Book Description
Now that the sale of a Picasso painting has exceeded US$100 million at auction, the forgers are extricating their bag of tricks. This fascinating collection of papers provides an eclectic coverage of the art and philatelic concerns in safeguarding the integrity of creative artists. It paints a broader swath of the problems in art authentication, including philatelic fraud.The articles represent 24 expert contributions on relevant topics pertaining to the scientific detection of forgery in art and philately.

Author: Jr., Donnell R. Christian
Publisher: CRC Press
ISBN: 0203484541
Category : Law
Languages : en
Pages : 391

View

Book Description
Clandestine lab operators are not the mad scientists whose genius keeps them pent up in the laboratory contemplating elaborate formulas and mixing exotic chemicals. In fact, their equipment is usually simple, their chemicals household products, and their education basic. Most of the time the elements at the scene are perfectly legal to sell and own

Author: Bernhard Zachhuber
Publisher: Sudwestdeutscher Verlag Fur Hochschulschriften AG
ISBN: 9783838132594
Category :
Languages : en
Pages : 212

View

Book Description
The increasing worldwide threat of terrorism requires the capability of sytems to remotely detect and identify explosives. A stand-off Raman system was built and optimised which meets these demands including the identification of substances concealed in opaque containers. To meet the challenging situations in real life, explosives and their precursors were analysed in the presence of interfering substances and on a variety of background materials, including plastics or different car doors. The influence of the laser excitation wavelength was also investigated. The stand-off distance was successfully extended to 100 metres at a testing ground at the Austrian Armed Forces. The combination of stand-off Raman with spatial offset Raman scattering has enabled the identification and quantification of substances up to 40 metres in packaging which is non-transparent to the human eye. An alternative way to probe substances inside turbid bottles was found by using depth-resolved stand-off Raman spectroscopy. This methodology employs the speed of light to distinguish between samples located at different distances from the setup.

Author: Victoria A. Andrade
Publisher:
ISBN:
Category : Explosives
Languages : en
Pages : 244

View

Book Description
Current methodologies for detecting explosive materials include spectroscopic techniques like Raman and infrared spectroscopy, trained animals, and nanotechnology, among others, to enhance explosives residue detection. Each method has its own flaws, creating the need for improvement. Combining current methodologies can feasibly lead to developing a detection technique for explosives residue at an enhanced level. One feasible method for enhancement, investigated in this research, is through nanoparticle enhancement of infrared spectroscopy and Raman spectroscopy.

Author: Jehuda Yinon
Publisher: Elsevier
ISBN: 0080545203
Category : Health & Fitness
Languages : en
Pages : 455

View

Book Description
The detection of hidden explosives has become an issue of utmost importance in recent years. While terrorism is not new to the international community, recent terrorist attacks have raised the issue of detection of explosives and have generated a great demand for rapid, sensitive and reliable methods for detecting hidden explosives. Counterterrorist Detection Techniques of Explosives covers recent advances in this area of research including vapor and trace detection techniques (chemiluminescence, mass spectrometry, ion mobility spectrometry, electrochemical methods and micromechanical sensors, such as microcantilevers) and bulk detection techniques (neutron techniques, nuclear quadrupole resonance, x-ray diffraction imaging, millimeter-wave imaging, terahertz imaging and laser techniques). This book will be of interest to any scientists involved in the design and application of security screening technologies including new sensors and detecting devices which will prevent the smuggling of bombs and explosives. * Covers latest advances in vapor and trace detection techniques and bulk detection techniques* Reviews both current techniques and those in advanced stages of development* Techniques that are described in detail, including its principles of operation, as well as its applications in the detection of explosives

Author: Bohong Zhang
Publisher:
ISBN:
Category :
Languages : en
Pages : 34

View

Book Description
"Raman scattering is called a photonic - molecular interaction based on the kinetic model of the analytic. Due to the uniqueness of the Raman scattering technique, it can provide a unique fingerprint signal for molecular recognition. However, a serious challenge often encountered in Raman measurement comes from the requirements of fast, real-time remote sensing, background fluorescence suppression, and micro-environmental detection. A new Miniaturized Fiber-Optic Raman Probe (MFORP) for Raman spectroscopy, used especially for eliminating background fluorescence and enhancing sampling, is presented. Its main purpose is to provide an overview of excellent research on the detection of very small substances and to address the drawbacks of modern optical fiber Raman sensors that cannot be separated from background fluorescence interference. After a brief introduction of the traditional fiber Raman technology, the experimental operation of the design optimization of the new MFORP was discussed. We successfully combined several multi-mode fibers as one fiber taper for Raman spectral analysis by using the fiber tapering technique. The sensing principle and the fabrication of MFORP were discussed. In order to verify that MFORP is a better solution, we used traditional Fiber-Optic Raman sensor and MFORP to experiment on a variety of materials and compare the experimental results. We observed that MFORP not only effectively removes the background fluorescence of the fiber itself, but also improves the energy collection of the Raman spectrum, which provides an argument"--Abstract, page iii.

Author: National Research Council
Publisher: National Academies Press
ISBN: 0309166039
Category : Technology & Engineering
Languages : en
Pages : 148

View

Book Description
Existing and Potential Standoff Explosives Detection Techniques examines the scientific techniques currently used as the basis for explosives detection and determines whether other techniques might provide promising research avenues with possible pathways to new detection protocols. This report describe the characteristics of explosives, bombs, and their components that are or might be used to provide a signature for exploitation in detection technology; considers scientific techniques for exploiting these characteristics to detect explosives and explosive devices; discusses the potential for integrating such techniques into detection systems that would have sufficient sensitivity without an unacceptable false-positive rate; and proposes areas for research that might be expected to yield significant advances in practical explosives and bomb detection technology in the near, mid, and long term.

Author: Hiltmar Schubert
Publisher: Springer Science & Business Media
ISBN: 1402051573
Category : Political Science
Languages : en
Pages : 166

View

Book Description
This book is derived from lectures at an international NATO-Russian Advanced Research Workshop on the Stand-off-Detection of concealed explosives carried by suicide-bombers or in vehicles. Ideally, explosives should be detected by harmless methods at a distance, and unknown to the persons under inspection. The aim is to devise sensing techniques that will allow the shortest developing time sufficient to start commercial production. Short time availability is a prioritizing isssue.