Results of field trials for the PELAN system

Womble, Phillip C.; Vourvopoulos, G.; Paschal, Jon; Novikov, Ivan; Barzilov, Alexander

doi:10.1117/12.450506

Cited by 4 publications

(4 citation statements)

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“…Last decade of research and development introduced a lot of NAA techniques to the scientific (Parsons et al, 2011), and medical research (Kehayias and Shuang 1993;Maglich &Nalcioglu, 2010), various material analysis applications, ranging from coal (Dep et al, 1998;Sowerby, 2009) and cement analysis (Womble et al, 2005), borehole logging (Nikitin & Bliven, 2010) to various explosive detection schemes (Vourvopoulos & Womble, 2001;Aleksandrov et al, 2005;Lanza, 2006), such as detection of threats in cargo containers and vehicles (Barzilov & Womble, 2003, Reber etal., 2005Koltick et al, 2007) and land mine detection (Womble et al, 2002;Holslin et al, 2006).…”

Section: Introductionmentioning

confidence: 96%

New Developments of Neutron Activation Analysis Applications

Shulyakova¹,

Avtonomov²,

Kornienko³

2015

Procedia - Social and Behavioral Sciences

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Neutron Activation Analysis is the most sensitive analytical technique used to determine concentration of elements in a sample. Methods of neutron activation analysis have been known for quite a long time, since 1936. However, active development of this method in its technological applications has been started together with recent developments of powerful and safe sources of neutrons, precise and fast gamma detectors, high speed electronics, increased processing ability of the computers and growing demands for industrial processes automation quality control. We discuss as these latest developments influenced performance and utility of different Neutron Activation Analysis techniques and first of all accuracy and stability of analytical results. As a result of the mentioned improvements wide variety of neutron analysis devices has been employed recently for reliable and precise control in cement and coal industry, borehole logging, security monitoring, industrial elemental analysis for production automation and quality control, nondestructive testing. Company RatecLab Ltd develops universal detection system of high resolution gamma spectroscopy for tagged neutron analysis with time-of-light filtering (Skolkovo Grant 2014-2015. Such high resolution detection platform would address the shortcuts and problems associated with conventional detection systems that utilize detectors with relatively low resolution prone to high background problem and slow response time. We perform thorough research of new potential applications of such precise and fast Neutron Activation Analysis system for some unresolved demanding problems of industries such as gas and oil industry. In our opinion there are multiple new possibilities to apply systems with neutron interrogation for industrial production control, nondestructive pipe inspection, neutron radiography etc.

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Section: Introductionmentioning

confidence: 96%

New Developments of Neutron Activation Analysis Applications

Shulyakova¹,

Avtonomov²,

Kornienko³

2015

Procedia - Social and Behavioral Sciences

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“…BGO scintillators have approximately the same efficiency as NaI(Tl), but the interactions of neutrons with BGO elements result in the appearance of gamma lines with energy up to 2.5 MeV, which makes this detector unsuitable for measuring gamma spectra in this range in neutron-gamma analysis [45]. Also, a significant drawback of this type of detector is sensitivity to external temperature [46], but a thermal correction system can compensate for this disadvantage [47].…”

Section: Bgomentioning

confidence: 99%

Neutron-Stimulated Gamma Ray Analysis of Soil

Kavetskiy¹,

Yakubova²,

Torbert³

2017

New Insights on Gamma Rays

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This chapter describes technical aspects of neutron-stimulated gamma ray analysis of soil carbon. The introduction covers general principles, different modifications of neutron-gamma analysis, measurement system configuration, and advantages of this method for soil carbon analysis. Problems with neutron-gamma technology in soil carbon analysis and methods of investigations including Monte-Carlo simulation of neutron interaction with soil elements are discussed further. Based on the investigation results, a method of extracting the "soil carbon net peak" from the raw acquired data was developed. The direct proportional dependency between the carbon net peak area and average carbon weight percent in the upper 10 cm soil layer for any carbon depth profile was shown. Calibration of the measurement system using sand-carbon pits and field measurements of soil carbon are described. Measurement results compared to chemical analysis (dry combustion) data demonstrated good agreement between the two methods. Thus, neutron-stimulated gamma ray analysis can be used for in situ determination of near-surface soil carbon content and is applicable for precision geospatial mapping of soil carbon.

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“…The BGO demonstrates excellent behaviour under neutron irradiation without delayed decay issues. Significant downside of the BGO detector is its sensitivity to the environmental temperature (Womble et al, 2002).…”

Section: Gamma Ray Detectorsmentioning

confidence: 99%

“…Security applications of neutron based systems are for chemical and explosive threats detection (Vourvopoulos & Womble, 2001;Aleksandrov et al, 2005;Lanza, 2006), including the search for threats in cargo containers (Barzilov & Womble, 2003) and vehicles (Reber et al, 2005;Koltick et al, 2007), humanitarian demining and confirmation of unexploded ordinance (Womble et al, 2002;Holslin et al, 2006). Such technologies are considered in astrochemistry applications for in situ analysis of planetary samples (Parsons et al, 2011).…”

Section: Introductionmentioning

confidence: 99%