Measurement of 14MeV neutron-induced prompt gamma-ray spectra from 15 elements found in cargo containers

Pérot, B.; Carasco, C.; Bernard, Sébastien; Mariani, Alberto; Szabo, Jean-Louis; Sannié, Guillaume; Valković, V.; Sudac, Davorin; Viesti, G.; Lunardon, M.; Botosso, C.; Nebbia, G.; Pesente, S.; Moretto, S.; Zenoni, A.; Donzella, A.; Moszyński, M.; Gierlik, M.; Klamra, W.; Tourneur, P. Le; Lhuissier, M.; Colonna, A.; Tintori, C.; Puppa, Paolo; Vitor, Sequeira; Salvato, M.

doi:10.1016/j.apradiso.2007.11.011

Cited by 43 publications

(15 citation statements)

References 14 publications

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“…Even with the recent ENDF/B-VII library, the peaks near 1270 keY (1266 keY and 1273 keY lines) and near 1680 keY (1677 keY and 1688 keV lines) of sulfur are not well reproduced in the calculated spectrum. Similar issues have already been reported for some elements [11]. For the other elements of interest in this work (phosphor, fluorine, chlorine and sodium), gamma rays given by MCNPX and ENDF/B-VII are in satisfactory agreement with experiment.…”

Section: B Apt Signaturessupporting

confidence: 78%

“…7, showing several characteristic peaks that can be used for identification. Other elements, such as chlorine and sodium [11], phosphor and fluorine (see further in Fig. 11), can also be unambiguously identified with their gamma rays.…”

Section: B Apt Signaturesmentioning

confidence: 91%

“…APT gamma-ray spectra associated to several elements of interest (F, Na, P, S, CI, As, Br, I and Hg) have been recorded using several 5"x5"x 10" NaI(TI) detectors of the EURITRACK system and several hour acquisition times, as described in [11]. An element can be recognized if characteristic gamma rays of its natural isotopes can be identified in the gamma-ray spectrum.…”

Section: B Apt Signaturesmentioning

confidence: 99%

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Detection of chemical agents with a portable neutron inspection system

Carasco

Pérot

et al. 2008

2008 IEEE Nuclear Science Symposium Conference Record

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The detection of special elements that can be used by terrorists in improvised chemical weapons can be performed by the spectroscopic analysis of neutron-induced gamma rays. Numerical simulations and experiments have been performed with the aim of designing a portable inspection system. Both thermal neutron analysis (TNA) and the associated particle technique (APT) have been studied within French CBNRE (chemical, biological, nuclear, radiological and explosive) R&D program. The results obtained so far show that TNA and APT can be used in complement to reach the largest possible panel of detectable elements.

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Section: B Apt Signaturessupporting

confidence: 78%

Section: B Apt Signaturesmentioning

confidence: 91%

Section: B Apt Signaturesmentioning

confidence: 99%

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Detection of chemical agents with a portable neutron inspection system

Carasco

Pérot

et al. 2008

2008 IEEE Nuclear Science Symposium Conference Record

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“…Experience from past European projects EURITRACK [6] [7], Eritr@ck and UNCOSS [8] [9], showed that simulation does not entirely reproduce measured gamma signatures. For most common elements, a rather good agreement is observed, even if missing peaks or differences in the continuum can be noted.…”

Section: Acquisition Of Experimental Gamma Signaturesmentioning

confidence: 99%

Gamma signatures of the C-BORD Tagged Neutron Inspection System

et al. 2018

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Abstract-In the frame of C-BORD project (H2020 program of the EU), a Rapidly relocatable Tagged Neutron Inspection System (RRTNIS) is being developed to non-intrusively detect explosives, chemical threats, and other illicit goods in cargo containers. Material identification is performed through gamma spectroscopy, using twenty NaI detectors and four LaBr3 detectors, to determine the different elements composing the inspected item from their specific gamma signatures induced by fast neutrons. This is performed using an unfolding algorithm to decompose the energy spectrum of a suspect item, selected by Xray radiography and on which the RRTNIS inspection is focused, on a database of pure element gamma signatures. This paper reports on simulated signatures for the NaI and LaBr3 detectors, constructed using the MCNP6 code. First experimental spectra of a few elements of interest are also presented.Index Terms-C-BORD project, Rapidly Relocatable Tagged Neutron Inspection System, fast neutron activation analysis, inelastic scattering gamma rays, MCNP6

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“…However, the pulse height tally does not work well with neutrons, and a very long computing time necessary to simulate the whole macroscopic experimental model. Furthermore, the calculation is not reliable as the intrinsic non-analogous nature of neutron transport in MCNP [8], as was encountered in the study of Perot et al [9]. A two-step calculation method is considered to avoid these problems.…”

Section: Introductionmentioning

confidence: 99%

Monte Carlo simulation of prompt γ -ray spectra from depleted uranium under D-T neutron irradiation and electron recoil spectra in a liquid scintillator detector

et al. 2016

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Abstract:To overcome the problem of inefficient computing time and unreliable results in MCNP5 calculation, a two-step method is adopted to calculate the energy deposition of prompt γ-rays in detectors for depleted uranium spherical shells under D-T neutrons irradiation. In the first step, the γ-ray spectrum for energy below 7 MeV is calculated by MCNP5 code; secondly, the electron recoil spectrum in a BC501A liquid scintillator detector is simulated based on EGSnrc Monte Carlo Code with the γ-ray spectrum from the first step as input. The comparison of calculated results with experimental ones shows that the simulations agree well with experiment in the energy region 0.4-3 MeV for the prompt γ-ray spectrum and below 4 MeVee for the electron recoil spectrum. The reliability of the two-step method in this work is validated.

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Measurement of 14MeV neutron-induced prompt gamma-ray spectra from 15 elements found in cargo containers

Cited by 43 publications

References 14 publications

Detection of chemical agents with a portable neutron inspection system

Detection of chemical agents with a portable neutron inspection system

Gamma signatures of the C-BORD Tagged Neutron Inspection System

Monte Carlo simulation of prompt γ -ray spectra from depleted uranium under D-T neutron irradiation and electron recoil spectra in a liquid scintillator detector

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