WO2004104546A2 - Verfahren und vorrichtung zum nachweis von gefährlichen gütern in gepäckstücken unter verwendung einer gepulsten neutronenquelle - Google Patents
Verfahren und vorrichtung zum nachweis von gefährlichen gütern in gepäckstücken unter verwendung einer gepulsten neutronenquelle Download PDFInfo
- Publication number
- WO2004104546A2 WO2004104546A2 PCT/DE2004/001019 DE2004001019W WO2004104546A2 WO 2004104546 A2 WO2004104546 A2 WO 2004104546A2 DE 2004001019 W DE2004001019 W DE 2004001019W WO 2004104546 A2 WO2004104546 A2 WO 2004104546A2
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- neutron
- neutrons
- luggage
- counter tubes
- array
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Ceased
Links
Classifications
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01V—GEOPHYSICS; GRAVITATIONAL MEASUREMENTS; DETECTING MASSES OR OBJECTS; TAGS
- G01V5/00—Prospecting or detecting by the use of ionising radiation, e.g. of natural or induced radioactivity
- G01V5/20—Detecting prohibited goods, e.g. weapons, explosives, hazardous substances, contraband or smuggled objects
- G01V5/22—Active interrogation, i.e. by irradiating objects or goods using external radiation sources, e.g. using gamma rays or cosmic rays
- G01V5/234—Measuring induced radiation, e.g. thermal neutron activation analysis
Definitions
- the invention relates to a method and a device that can be used to quickly and reliably find and identify dangerous goods such as explosives, chemical warfare agents or narcotics in luggage.
- Warfare agents and biological material in closed containers are becoming increasingly important.
- neutrons for analytical processes in industry, agriculture, medicine and research has a long tradition.
- the activation analysis (NAA) is largely linked to stationary neutron sources such as research reactors and neutron generators, which have high fluxes in order to determine element contents in the lower trace range.
- the use of mobile neutron sources in geophysical borehole exploration (neutron carrotage) was used both
- Isotope neutron sources such as 252 Cf, 241 Am / Be (up to 10 6 neutrons per second) as well as miniaturized neutron generators, which use the D / T fusion reaction to deliver monoenergetic 14 MeV neutrons and reach the source strengths of up to a few 10 8 n / s can.
- Relatively simple analytical arrangements are used in mining for the online determination of metal contents in ores, Mg / Ca contents in table or potash salts on conveyor belts. In metallurgy, the determination of oxygen in aluminum or the determination of silicon in coal are among the analytical routines.
- Sum effects such as the thermalization of fast neutrons on preferably light nuclei such as hydrogen enable further applications, such as the contactless measurement of phase boundaries between water and petrol in tanks, water and petroleum in pipelines or ash contents in oil.
- a system is therefore being developed for the inspection of luggage and transport containers, which consists of the following components:
- the 14 MeV neutrons were emitted and directed onto the case on a conveyor belt using a reflector. A special thermalization takes place in the explosive, which is registered in the detector 1.
- the explosive in the case causes an increased count rate of thermalized neutrons at the detector 1, which indicates the possibility of existing explosives (and / or drugs etc.). If gamma quanta, typical of C, O and (N), reach the gamma detectors at the same time, the explosive is identified.
- the type of explosive results from the ratios of hydrogen to oxygen, carbon to oxygen / nitrogen. If CI and F lines appear, chemical warfare agents are involved. If Si occurs, this suggests glass containers.
- FIG. 2 The top view of the device according to the invention is shown in Fig. 2.
- the time profiles (Fig. 3.1) on the neutron detectors 1 - 5 show which typical signal would cause the presence of explosives in the transport container at the specified location.
- the ⁇ -spectra recorded at the same time (Fig.3.2) are set by means of a coincidence device in relation to the neutron detection curves and thus enable the typical hazardous substances to be clearly identified.
- the appearance of C, O as a result of ineleastic scatter proves the presence of explosives / drugs.
- the device is characterized by a switchable miniaturized neutron source with a source strength of a few 10 8 neutrons per second. This enables a flux density of 10 4 neutrons / cm 2 . s), based on a case cross-section of 1 m 2 , which is necessary for the safe detection of explosives with a mass of 10 g (TNT, RDX ). the formation of a directed 14 MeV neutron beam by supplementing the neutron source with an effective reflector, which enables an approximate 2 ⁇ geometry. an arrangement of detectors for detecting thermalized neutrons depending on their decay behavior. A detector array consisting of 3 He or 10 BF 3 counter tubes is used for this.
- detectors If one or more of these detectors shows an abnormally high number of thermalized neutrons, they have passed a high concentration of hydrogen nuclei when they passed through the case.
- an arrangement of gamma detectors which enables the detection of induced gamma rays of hydrogen, carbon, oxygen, silicon and nitrogen and other elements spectrometrically.
- control electronics for data fusion of the signals supplied by the neutron and gamma detectors.
- a coincidence apparatus as part of the data processing, which enables the temporal assignment of n-time spectra and gamma spectra and thus the identification of explosives.
- a comparison computer with a library of typical "fingerprints" of typical luggage contents with and without explosives.
- the measuring arrangement for the detection of thermalized neutrons is intended to provide time-resolved spectra, which provide information about the path covered and the materials that have passed through it, the time-resolved curves being decrypted (calibrated, standardized) using typical patterns.
- a coincidence level is used, which enables an improved localization of substances of interest.
- the decay curves of thermalized neutrons contain deviations from the ideal decay form in homogeneous media. These are used as characteristic information according to the Fourier transformation or the Wafelet method.
- the computer system contains information from a "learning” (calibration) process in a program library in which the following data relationships, obtained from comparative measurements with real systems, are contained:
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- Physics & Mathematics (AREA)
- High Energy & Nuclear Physics (AREA)
- Life Sciences & Earth Sciences (AREA)
- General Life Sciences & Earth Sciences (AREA)
- General Physics & Mathematics (AREA)
- Geophysics (AREA)
- Analysing Materials By The Use Of Radiation (AREA)
- Geophysics And Detection Of Objects (AREA)
Abstract
Description
Claims
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| EP04732087A EP1625423A2 (de) | 2003-05-16 | 2004-05-11 | Verfahren und vorrichtung zum nachweis von gefährlichen gütern in gepäckstücken unter verwendung einer gepulsten neutronenquelle |
| US10/556,972 US20070069145A1 (en) | 2003-05-16 | 2004-05-11 | Procedure and facility for providing proof of dangerous goods in pieces of baggage |
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE10323093A DE10323093A1 (de) | 2003-05-16 | 2003-05-16 | Verfahren und Vorrichtung zum Nachweis von gefährlichen Gütern in Gepäckstücken |
| DE10323093.9 | 2003-05-16 |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| WO2004104546A2 true WO2004104546A2 (de) | 2004-12-02 |
| WO2004104546A3 WO2004104546A3 (de) | 2005-04-07 |
Family
ID=33441126
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| PCT/DE2004/001019 Ceased WO2004104546A2 (de) | 2003-05-16 | 2004-05-11 | Verfahren und vorrichtung zum nachweis von gefährlichen gütern in gepäckstücken unter verwendung einer gepulsten neutronenquelle |
Country Status (4)
| Country | Link |
|---|---|
| US (1) | US20070069145A1 (de) |
| EP (1) | EP1625423A2 (de) |
| DE (1) | DE10323093A1 (de) |
| WO (1) | WO2004104546A2 (de) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102246024B (zh) * | 2008-12-15 | 2015-04-29 | 原子能与替代能源委员会 | 发射中子的方法及用于非侵入性检测化学元素的方法 |
Families Citing this family (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| PL1882929T3 (pl) * | 2006-07-28 | 2012-04-30 | Sage Innovations Inc | System detekcji i sposób detekcji oparty na pulsacyjnych cząstkach energetycznych |
| JP5445016B2 (ja) * | 2009-10-15 | 2014-03-19 | 株式会社Ihi | 非破壊検査方法及びその装置 |
| JP5347896B2 (ja) | 2009-10-15 | 2013-11-20 | 株式会社Ihi | 非破壊検査方法及びその装置 |
| DE102010056517A1 (de) * | 2010-12-29 | 2012-07-05 | Atlas Elektronik Gmbh | Erkennungsvorrichtung und Erkennungsverfahren zum Erkennen eines in einem Gewässer angeordneten und einen chemischen Stoff aufweisenden Unterwasserkörpers sowie System mit Unterwasserfahrzeug und Erkennungsvorrichtung |
| DE102014203908A1 (de) * | 2014-03-04 | 2015-09-10 | Siemens Aktiengesellschaft | Vorrichtung und Verfahren zur zerstörungsfreien Untersuchung eines Objektes |
| US9151852B1 (en) * | 2014-06-04 | 2015-10-06 | Sandia Corporation | Material identification based upon energy-dependent attenuation of neutrons |
| CN109975886B (zh) * | 2019-04-30 | 2024-08-06 | 广东太微加速器有限公司 | 一种中子安检设备 |
| US11061164B1 (en) * | 2019-06-06 | 2021-07-13 | National Technology & Engineering Solutions Of Sandia, Llc | System, algorithm, and method using short pulse interrogation with neutrons to detect and identify matter |
Family Cites Families (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4851687A (en) * | 1987-01-13 | 1989-07-25 | Scientific Innovations, Inc. | Detection of nitrogen in explosives |
| GB8726477D0 (en) * | 1987-11-12 | 1987-12-16 | Atomic Energy Authority Uk | Analysis using neutrons |
| US4938917A (en) * | 1988-11-17 | 1990-07-03 | The United States Of America As Represented By The United States Department Of Energy | Nuclear reactor with internal thimble-type delayed neutron detection system |
| US5200626A (en) * | 1990-03-28 | 1993-04-06 | Martin Marietta Energy Systems, Inc. | Hidden explosives detector employing pulsed neutron and x-ray interrogation |
| US5557108A (en) * | 1993-10-25 | 1996-09-17 | T+E,Uml U+Ee Mer; T+E,Uml U+Ee May O. | Integrated substance detection and identification system |
| US20050135535A1 (en) * | 2003-06-05 | 2005-06-23 | Neutron Sciences, Inc. | Neutron detector using neutron absorbing scintillating particulates in plastic |
| US7141799B1 (en) * | 2005-03-30 | 2006-11-28 | Ut-Battelle, Llc | Fiber optic thermal/fast neutron and gamma ray scintillation detector |
-
2003
- 2003-05-16 DE DE10323093A patent/DE10323093A1/de not_active Withdrawn
-
2004
- 2004-05-11 EP EP04732087A patent/EP1625423A2/de not_active Withdrawn
- 2004-05-11 US US10/556,972 patent/US20070069145A1/en not_active Abandoned
- 2004-05-11 WO PCT/DE2004/001019 patent/WO2004104546A2/de not_active Ceased
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102246024B (zh) * | 2008-12-15 | 2015-04-29 | 原子能与替代能源委员会 | 发射中子的方法及用于非侵入性检测化学元素的方法 |
Also Published As
| Publication number | Publication date |
|---|---|
| EP1625423A2 (de) | 2006-02-15 |
| WO2004104546A3 (de) | 2005-04-07 |
| US20070069145A1 (en) | 2007-03-29 |
| DE10323093A1 (de) | 2004-12-16 |
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