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Explosives Detection using Magnetic and Nuclear Resonance Techniques

Name: Explosives Detection using Magnetic and Nuclear Resonance Techniques
Brand: Springer
SKU: 9789048130610
Price: 177.58 EUR
Availability: InStock

Автор: Jacques Fraissard, Olga Lapina

Език:

Корици: С меки корици

Издател: Springer

Наличност: Външен склад в ограничено количество

Изпращаме след 13-18 дни

177.58 € 347.32 лв

Nuclear quadrupole resonance (NQR) a highly promising new technique for bulk explosives detection: r...

Информация за книгата

Автор

Jacques Fraissard, Olga Lapina

Език

Английски език

Корици

Книга - С меки корици

Издадена

2009

страници

292

EAN

9789048130610

ISBN

9048130611

Enbook ID

01972891

Издател

Springer

Теглоt

950

Размери

155 x 235 x 20

Пълно описание

Nuclear quadrupole resonance (NQR) a highly promising new technique for bulk explosives detection: relatively inexpensive, more compact than NMR, but with considerable selectivity. Since the NQR frequency is insensitive to long-range variations in composition, mixing explosives with other materials, such as the plasticizers in plastic explosives, makes no difference. The NQR signal strength varies linearly with the amount of explosive, and is independent of its distribution within the volume monitored. NQR spots explosive types in configurations missed by the X-ray imaging method.§But if NQR is so good, why it is not used everywhere? Its main limitation is the low signal-to-noise ratio, particularly with the radio-frequency interference that exists in a field environment, NQR polarization being much weaker than that from an external magnetic field. The distinctive signatures are there, but are difficult to extract from the noise. In addition, the high selectivity is partly a disadvantage, as it is hard to build a multichannel system necessary to cover a wide range of target substances. Moreover, substances fully screened by metallic enclosures, etc. are difficult to detect. A workshop was held at St Petersburg in July 2008 in an attempt to solve these problems and make NQR the universal technique for the detection of bombs regardless of type. This book presents the essentials of the papers given there.