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Magnetic Resonance Detection of Explosives and Illicit Materials

Detection of concealed explosives is a notoriously difficult problem, and many different approaches have been proposed to solve this problem. Nuclear quadrupole resonance (NQR) is unique in many ways. It operates in a safe AM radio frequency range, and it can remotely detect unique "fingerprint...

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Detalles Bibliográficos
Clasificación:Libro Electrónico
Autor Corporativo: SpringerLink (Online service)
Otros Autores: Apih, Tomaž (Editor ), Rameev, Bulat (Editor ), Mozzhukhin, Georgy (Editor ), Barras, Jamie (Editor )
Formato: Electrónico eBook
Idioma:Inglés
Publicado: Dordrecht : Springer Netherlands : Imprint: Springer, 2014.
Edición:1st ed. 2014.
Colección:NATO Science for Peace and Security Series B: Physics and Biophysics,
Temas:
Acceso en línea:Texto Completo

MARC

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245 1 0 |a Magnetic Resonance Detection of Explosives and Illicit Materials  |h [electronic resource] /  |c edited by Tomaž Apih, Bulat Rameev, Georgy Mozzhukhin, Jamie Barras. 
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490 1 |a NATO Science for Peace and Security Series B: Physics and Biophysics,  |x 1874-6535 
505 0 |a Part 1 Nuclear Quadrupole Resonance Detection of Solids -- Further improvement of NQR technique for detection of illicit substances -- An Overview of NQR Signal Detection Algorithms -- Nuclear Quadrupole Resonance of Pantaerythritol Tetranitrate (PETN) in Different Compositions -- Cross-relaxation enhanced NQR of ammonium nitrate in low magnetic field -- Investigating homonuclear broadening in NQR with Carr-Purcell Meiboom-Gill performed on p-chloroaniline -- Size Effect in 14N Nuclear Quadrupole Resonance Spectroscopy -- NQR Detection of Sodium Nitrite Recrystallized in Wood -- Part 2 Nuclear Magnetic Resonance Detection of Liquids -- Bottled Liquid Scanner for Security Checkpoints -- MagViz: A Bottled Liquids Scanner Using Ultra-low field NMR Relaxometry -- Multiparameter NMR Identification of Liquid Substances -- NMR-Based Liquid Explosives Detector: Advantages and Disadvantages of Different Configurations -- Composite Pulses in Inhomogeneous Field NMR -- Part 3 Other Techniques -- Novel HTS DC Squid Solutions For NMR Applications -- Passive Sub THz Imaging. 
520 |a Detection of concealed explosives is a notoriously difficult problem, and many different approaches have been proposed to solve this problem. Nuclear quadrupole resonance (NQR) is unique in many ways. It operates in a safe AM radio frequency range, and it can remotely detect unique "fingerprint" (NQR spectrum) of many explosives, such as TNT or RDX. As such, the detection of target does not depend on the shape or material of the container, or the presence of metallic object such as triggers etc. Spectra of chemically similar compounds differ enough that their presence never causes interference or false alarms. Unfortunately, widespread use is prevented due to low sensitivity, radiofrequency interference from the noisy environment, and inability to detect liquid explosives. This book presents current state of the art of the attempts to overcome NQR sensitivity problem, either by increasing the strengths of signals generated, or by increasing the specificity of the technique through a better understanding of the factors that affect the quadrupolar parameters of specific explosives. The use of these specific quadrupolar parameters is demonstrated on signal processing techniques that can detect weak signals, which are hidden in a noisy background. The problem of differentiation of liquid explosives and benign liquids in closed containers is approached by measurements of different nuclear magnetic resonance (NMR) parameters. As shown, a couple of solutions has reached a prototype stage and could find their use in a near future. 
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