NDLI: Identification of background isotopes to reduce false-positives in active interrogation systems

Content Provider	IEEE Xplore Digital Library
Author	Lee, T. Blackburn, B. Johnson, E.
Copyright Year	2012
Description	Author affiliation: Raytheon Integrated Defense Systems, 50 Apple Hill Drive, Tewksbury, MA 01876, USA (Lee, T.; Blackburn, B.; Johnson, E.)
Abstract	Active interrogation systems must overcome the problem of interfering signals due to the activation and decay of environmental background isotopes. Identifying specific reactions that cause conflicting signatures allows for the filtering of such signals and reducing the probability of false-positives; however, investigations by computational modeling to this level of depth is often limited by time, computer resources and insufficient cross section data. By filtering cross section data from existing nuclear data libraries, it is possible to identify, filter, and thus reduce such signals. Several reactions were identified that have significant probabilities of interaction that can cause background interference, including $^{18}O(γ,P)^{17}Nand$ $^{28}Si(γ,N)^{27}Si,$ which each have high gamma decay energies or delayed neutron emissions $(^{17}N)$ and decay on a time scale of several seconds, similar to signatures of target materials of interest.
Starting Page	507
Ending Page	510
File Size	229609
Page Count	4
File Format	PDF
ISBN	9781467327084
e-ISBN	9781467327091
DOI	10.1109/THS.2012.6459900
Language	English
Publisher	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Publisher Date	2012-11-13
Publisher Place	USA
Access Restriction	Subscribed
Rights Holder	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Subject Keyword	isotope identification radiation detection background radiation Filtering Databases Computational modeling Neutrons Libraries Isotopes active interrogation
Content Type	Text
Resource Type	Article

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4	Project PI / Joint PI	Principal Investigator and Joint Principal Investigators of the project	Dr. B. Sutradhar bsutra@ndl.gov.in Prof. Saswat Chakrabarti will be added soon
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