Navigation Links
Sensitive detection method may help impede illicit nuclear trafficking
Date:7/10/2014

WASHINGTON D.C., April 15, 2014 -- According to the International Atomic Energy Agency (IAEA) the greatest danger to nuclear security comes from terrorists acquiring sufficient quantities of plutonium or highly enriched uranium (HEU) to construct a crude nuclear explosive device. The IAEA also notes that most cases of illicit nuclear trafficking have involved gram-level quantities, which can be challenging to detect with most inspection methods.

According to a new study appearing this week in the Journal of Applied Physics, coupling commercially available spectral X-ray detectors with a specialized algorithm can improve the detection of uranium and plutonium in small, layered objects such as baggage. This approach enhances the detection powers of X-ray imaging and may provide a new tool to impede nuclear trafficking.

The study was conducted by a joint research team from the University of Texas at Austin (UT) and the Department of Energy's Pacific Northwest National Laboratory (PNNL).

"We first had to develop a computational model for how X-rays move through materials and how they are detected so that we could predict what an image will look like once the radiation passed through an object," said UT's Mark Deinert, one of the authors on the paper. "With that in hand, we applied an 'inverse algorithm,' varying the composition of the object until the predicted image matched the measured one. We also gave our algorithm additional details about density and other factorsa process called 'regularization' to adaptively enhance its ability to discriminate materials."

The new system, Deinert said, expands upon techniques originally developed for medical applications such as discerning between bone and iodine contrast agent in an X-ray image. "We wanted to show that spectrally sensitive detectors can be used to discriminate plutonium and other high-atomic-number elements from multiple layers of other materials using a single-view radiograph," said Andrew Gilbert, the lead author on the paper and a doctoral student of Deinert's working at PNNL. "In simulated radiographs, we were able to detect the presence of plutonium with a mass resolution per unit area of at least 0.07 gram/centimeter squared; in other words, we can locate a sample of plutonium with a thickness of only 0.036 millimeters."

Now that the inverse algorithm method has been shown to help X-rays detect nuclear materials in luggage and other small objects, Deinert said that his team will next expand the concept to improve detection on a larger scale. "We plan to apply the algorithm to high-energy X-ray systems that could be used for verification of arms-reduction treaties," he said.


'/>"/>

Contact: Jason Socrates Bardi
jbardi@aip.org
240-535-4954
American Institute of Physics
Source:Eurekalert  

Related biology technology :

1. Ultra-sensitive force sensing with a levitating nanoparticle
2. Eagle Biosciences Introduces Highly Sensitive Calprotectin ELISA Assay Kit
3. Adult Acne Treatment, Probiotic Action Shares New Insight on Why Men’s Skin is More Sensitive to Acne and How to Fight the Skin Condition with Supplements
4. A sensitive, affordable sensor to detect tiny amounts of CO2
5. Cost-Effective Approaches to Quality Distribution and Logistics for Temperature Sensitive Products
6. Researchers create method for more sensitive electrochemical sensors
7. Adaptive Biotechnologies launches clonoSEQ, a more sensitive, accurate assay to detect minimal residual disease (MRD) in blood-based cancers.
8. New silk technology preserves heat-sensitive drugs for months without refrigeration
9. New magnetic-field-sensitive alloy could find use in novel micromechanical devices
10. Menon Biosensors Demonstrates Industry Leading Sensitivity Levels for Detection of Tuberculosis and Clostridium difficile
11. Annai Systems to Support International Challenge to Improve the Detection of Cancer Mutations
Post Your Comments:
*Name:
*Comment:
*Email:
Related Image:
Sensitive detection method may help impede illicit nuclear trafficking
(Date:6/24/2016)... ... June 24, 2016 , ... While the majority of commercial ... Cary 5000 and the 6000i models are higher end machines that use the more ... the spectrophotometer’s light beam from the bottom of the cuvette holder. , FireflySci ...
(Date:6/23/2016)... , June 23, 2016 /PRNewswire/ - FACIT has ... Ontario biotechnology company, Propellon Therapeutics Inc. ... and commercialization of a portfolio of first-in-class WDR5 ... targets such as WDR5 represent an exciting class ... in precision medicine for cancer patients. Substantial advances ...
(Date:6/23/2016)...  The Biodesign Challenge (BDC), a university competition that ... living systems and biotechnology, announced its winning teams at ... New York City . The teams, ... at MoMA,s Celeste Bartos Theater during the daylong summit. ... curator of architecture and design, and Suzanne Lee ...
(Date:6/23/2016)... Apellis Pharmaceuticals, Inc. today announced positive ... its complement C3 inhibitor, APL-2. The trials were ... studies designed to assess the safety, tolerability, pharmacokinetics ... healthy adult volunteers. Forty subjects were ... dose (ranging from 45 to 1,440mg) or repeated ...
Breaking Biology Technology:
(Date:4/15/2016)... 2016 Research and Markets has ... Market 2016-2020,"  report to their offering.  , ... ,The global gait biometrics market is expected to ... period 2016-2020. Gait analysis generates multiple ... used to compute factors that are not or ...
(Date:3/31/2016)... BOCA RATON, Florida , March 31, 2016 /PRNewswire/ ... LEGX ) ("LegacyXChange" or the "Company") ... presentation for potential users of its soon to be ... The video ( https://www.youtube.com/channel/UCyTLBzmZogV1y2D6bDkBX5g ) will also ... by the use of DNA technology to an industry ...
(Date:3/23/2016)... Massachusetts , March 23, 2016 /PRNewswire/ ... im Interesse erhöhter Sicherheit Gesichts- und Stimmerkennung ... Xura, Inc. (NASDAQ: MESG ), ... bekannt, dass das Unternehmen mit SpeechPro zusammenarbeitet, ... aus der Finanzdienstleistungsbranche, wird die Möglichkeit angeboten, ...
Breaking Biology News(10 mins):