Photoneutron spectroscopy using monoenergetic gamma rays for bulk explosives detection

McFee, John E.; Faust, Anthony A.; Pastor, Kyle

doi:10.1016/j.nima.2012.12.053

Cited by 13 publications

(5 citation statements)

References 23 publications

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“…By the introduction of a 10 cm thick spherical shell of polyethylene, a thermal neutron yield of 1.5 Â 10 9 neutrons/mA/s was obtained. This study reinforces the need for improving the Geant4 photonuclear reaction model at low photon energies, as has been suggested by others [27]. Furthermore, although the results have been validated in only a limited fashion against Fluka code and have not yet been validated against experimental data, the study provides further confirmation of the ease of use of Geant4 for such source designs.…”

Section: Resultssupporting

confidence: 85%

Optimization of a photoneutron source based on 10MeV electron beam using Geant4 Monte Carlo code

Askri

2015

Nuclear Instruments and Methods in Physics Research Section B:

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Section: Resultssupporting

confidence: 85%

Optimization of a photoneutron source based on 10MeV electron beam using Geant4 Monte Carlo code

Askri

2015

Nuclear Instruments and Methods in Physics Research Section B:

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“…A 2014 review by Whetstone and Kearfott describes the basic principles behind each of these interrogation techniques and emphasizes their advantages and disadvantages, and gives an overview of the different neutron sources currently used for each technique [16]. An alternative detection method suggests using gamma rays to induce neutron scattering for detection [17].…”

Section: Neutron Activation and Gamma Emissionmentioning

confidence: 99%

Advances in explosives analysis—part II: photon and neutron methods

et al. 2015

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The number and capability of explosives detection and analysis methods have increased dramatically since publication of the Analytical and Bioanalytical Chemistry special issue devoted to Explosives Analysis [Moore DS, Goodpaster JV, Anal Bioanal Chem 395:245-246, 2009]. Here we review and critically evaluate the latest (the past five years) important advances in explosives detection, with details of the improvements over previous methods, and suggest possible avenues towards further advances in, e.g., stand-off distance, detection limit, selectivity, and penetration through camouflage or packaging. The review consists of two parts. Part I discussed methods based on animals, chemicals (including colorimetry, molecularly imprinted polymers, electrochemistry, and immunochemistry), ions (both ion-mobility spectrometry and mass spectrometry), and mechanical devices. This part, Part II, will review methods based on photons, from very energetic photons including X-rays and gamma rays down to the terahertz range, and neutrons.

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“…High-intensity, narrow energy-spread photon beam sources are being developed for use in applications such as nuclear security [1], nonproliferation [2] and safeguards [3,4] as well as for explosives detection [5], molecular structure studies [6], and for experimentally testing nuclear and quantum electrodynamic theories [7,8].…”

Section: Introductionmentioning

confidence: 99%

Developing a diagnostic for energetic laser-Compton produced photon beams

Quiter

Zhang

Barton

et al. 2018

Nuclear Instruments and Methods in Physics Research Section A:

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This paper describes the design and simulation of a radiation detector system for diagnostic measurements of photon beams produced by Thomson or Compton Scattering. The photon beam is Compton scattered in a thin passive converter, and the resulting electrons are analyzed using a charge-coupled device-based tracker and classification algorithms. The flux of the scattered electrons is much lower than that of the photon beam and is additionally dispersed. This dispersal enables measurements while avoiding pileup, which is important in order to provide diagnostic information from intense 'shot' based pulsed systems, such as those being built to leverage laser wakefield accelerators. Simulations indicate that the designed system is capable of resolving beam parameters from a single shot. The fidelity to which various beam parameters can be resolved is presented as are methods that could result in further improvement to diagnostic resolution.

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Photoneutron spectroscopy using monoenergetic gamma rays for bulk explosives detection

Cited by 13 publications

References 23 publications

Optimization of a photoneutron source based on 10MeV electron beam using Geant4 Monte Carlo code

Optimization of a photoneutron source based on 10MeV electron beam using Geant4 Monte Carlo code

Advances in explosives analysis—part II: photon and neutron methods

Developing a diagnostic for energetic laser-Compton produced photon beams

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