Novel detectors for fast-neutron resonance radiography

Vartsky, D.; Mor, I.; Goldberg, M.B.; Bar, Doron; Feldman, G.; Dangendorf, V.; Tittelmeier, K.; Weierganz, M.; Bromberger, B.; Breskin, A.

doi:10.1016/j.nima.2010.03.084

Cited by 18 publications

(11 citation statements)

References 7 publications

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“…The neutron generator demonstrated here could be ideal for Fast Neutron Resonance Radiography (FNRR) [39]. FNRR takes advantage of the unique neutron absorption spectra of different elements and is used in various research, industry and security applications to study twophase flow [40] and contraband detection of explosives [41], narcotics [42], and special nuclear materials [43].…”

Section: Fig 2 (Color Online)mentioning

confidence: 99%

“…6 in the few-MeV identify specific elements. The vertical bands on the figure indicate the uncertainty in resolving these resonances for a few example energies using a stateof-the-art 1 ns temporal resolution [39] (pink bands) vs. the 100 ps resolution (green bands) achievable with our scheme. Typical exposure values of FNRR are of 10 8 n/cm 2 [45].…”

Section: Fig 2 (Color Online)mentioning

confidence: 99%

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Ultrashort Pulsed Neutron Source

et al. 2014

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Section: Fig 2 (Color Online)mentioning

confidence: 99%

Section: Fig 2 (Color Online)mentioning

confidence: 99%

Ultrashort Pulsed Neutron Source

et al. 2014

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“…High-energy neutron imaging has been pursued, in general, with two main goals in mind, (1) to perform energy-selective (TOF-gated) imaging to use resonance-structure-related cross section differences to resolve concentrations of the elements, C, N and O, useful in explosives detection [63][64][65], for example and (2) imaging features shielded by high-Z, materials that are often dense and may be thick [66] and thus are intractable to image even with very high-energy (>1 MeV) X-rays. In addition to these uses, energy-selective imaging can be used to investigate the performance of scintillators and imaging systems as functions of incident neutron energy in order to understand characteristics and to choose or develop optimal components for neutron imaging.…”

Section: High-energy Neutron Imagingmentioning

confidence: 99%

Neutron Imaging at LANSCE—From Cold to Ultrafast

et al. 2018

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(Lujan center), Flight Path 5 beam line and continues to be refined. Applications include: imaging of metallic and ceramic nuclear fuels, fission gas measurements, tomography of fossils and studies of dopants in scintillators. The technique provides the ability to characterize materials opaque to thermal neutrons and to utilize neutron resonance analysis codes to quantify isotopes to within 0.1 atom %. The latter also allows measuring fuel enrichment levels or the pressure of fission gas remotely. More recently, the cold neutron spectrum at the ASTERIX beam line, also located at Target 1, was used to demonstrate phase contrast imaging with pulsed neutrons. This extends the capabilities for imaging of thin and transparent materials at LANSCE. In contrast, high-energy neutron imaging at LANSCE, using unmoderated fast spallation neutrons from Target 4 [Weapons Neutron Research (WNR) facility] has been developed for applications in imaging of dense, thick objects. Using fast (ns), time-of-flight imaging, enables testing and developing imaging at specific, selected MeV neutron energies. The 4FP-60R beam line has been reconfigured with increased shielding and new, larger collimation dedicated to fast neutron imaging. The exploration of ways in which pulsed neutron beams and the time-of-flight method can provide additional benefits is continuing. We will describe the facilities and instruments, present application examples and recent results of all these efforts at LANSCE.

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“…In an experiment [34] at Texas Petawatt Laser facility [35] a neutron flux of 10 18 n cm −2 s has been obtained in a time interval smaller than 50ps. Such characteristics of the neutrons source could be exploited optimally by fast neutron resonance radiography (FNRR) [36] for the non-intrusive identification of different types of materials, notably special nuclear materials, explosives, etc. The method is based on element specific absorption of neutrons at resonance.…”

Section: Laser Driven Nuclear Physics Experimentsmentioning

confidence: 99%

New frontiers in nuclear physics with high-power lasers and brilliant monochromatic gamma beams

et al. 2016

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The development of high power lasers and the combination of such novel devices with accelerator technology has enlarged the science reach of many research fields, in particular particle and nuclear physics, astrophysics as well as societal applications in material science, nuclear energy and applications for medicine. The European Strategic Forum for Research Infrastructures has selected a proposal based on these new premises called the Extreme Light Infrastructure (ELI). The ELI will be built as a network of three complementary pillars at the frontier of laser technologies. The ELI-NP pillar (NP for nuclear physics) is under construction near Bucharest (Romania) and will develop a scientific program using two 10 PW lasers and a Compton back-scattering high-brilliance and intense low-energy gamma beam, a combination of laser and accelerator technology at the frontier of knowledge. This unique combination of beams that are unique worldwide allows us to develop an experimental program in nuclear physics at the frontiers of present-day knowledge as well as society driven applications. In the present paper, the technical description of the facility as well as the new perspectives in nuclear structure, nuclear reactions and nuclear astrophysics will be presented.

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Novel detectors for fast-neutron resonance radiography

Cited by 18 publications

References 7 publications

Ultrashort Pulsed Neutron Source

Ultrashort Pulsed Neutron Source

Neutron Imaging at LANSCE—From Cold to Ultrafast

New frontiers in nuclear physics with high-power lasers and brilliant monochromatic gamma beams

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