Charged particle radiography

Morris, C. L.; King, N.S.P.; Kwiatkowski, K.; Mariam, Fesseha; Merrill, F. E.; Saunders, Alexander

doi:10.1088/0034-4885/76/4/046301

Cited by 53 publications

(26 citation statements)

References 96 publications

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“…The solution of the equation of motion leads to a harmonic oscillation with the amplitude or quiver velocity (2) ωL is the laser angular frequency. In a non-relativistic treatment, becomes c when the electric field amplitude E0 = 3.2 × 10 12 V/m, that is for intensities I = 1.37 × 10 18 W/cm 2 .…”

Section: Ion Acceleration With Shortpulse Lasersmentioning

confidence: 99%

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Z-petawatt driven ion beam radiography development.

Schollmeier¹,

Geißel²,

Rambo³

et al. 2013

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Laser-driven proton radiography provides electromagnetic field mapping with high spatiotemporal resolution, and has been applied to many laser-driven High Energy Density Physics (HEDP) experiments. Our report addresses key questions about the feasibility of ion radiography at the Z-Accelerator ("Z"), concerning laser configuration, hardware, and radiation background. Charged particle tracking revealed that radiography at Z requires GeV scale protons, which is out of reach for existing and near-future laser systems. However, it might be possible to perform proton deflectometry to detect magnetic flux compression in the fringe field region of a magnetized liner inertial fusion experiment. Experiments with the Z-Petawatt laser to enhance proton yield and energy showed an unexpected scaling with target thickness. Full-scale, 3D radiation-hydrodynamics simulations, coupled to fully explicit and kinetic 2D particle-in-cell simulations running for over 10 ps, explain the scaling by a complex interplay of laser prepulse, preplasma, and ps-scale temporal rising edge of the laser.4

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Section: Ion Acceleration With Shortpulse Lasersmentioning

confidence: 99%

“…Proton radiography for hydrodynamics and weapons physics has been previously developed using beams from conventional particle accelerators [2]. Here, ~200 MeV to GeV protons are used to radiograph thick and dense objects.…”

Section: Introductionmentioning

confidence: 99%

Z-petawatt driven ion beam radiography development.

Schollmeier¹,

Geißel²,

Rambo³

et al. 2013

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“…Moderator and shielding consisting of graphite, lead, water, and concrete surround the core. Even though the density of uranium in the core is only about 0.3 g/cm 3 , the combination of simulation and data demonstrated sufficient sensitivity to detect the uranium through the 10 cm thick lead reflector and water and concrete shielding surrounding the core. However, the sensitivity was not high.…”

mentioning

confidence: 99%

“…John Ramsey, 1 Yuji Sano, 2 Tsukasa Sugita, 4 Daichi Yamada, 3 Noriyuki Yoshida, 2 and Kenichi Yoshioka The model of the reactor included all major structures, the reactor building, containment vessel, and the pressure vessel. Calculations were performed for an intact core, a core with a 1 m diameter of material removed from the core and placed in the bottom of the pressure vessel, and with no core.…”

mentioning

confidence: 99%

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Analysis of muon radiography of the Toshiba nuclear critical assembly reactor

Morris

Bacon

Ban

et al. 2014

Applied Physics Letters

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A 1.2 × 1.2 m2 muon tracker was moved from Los Alamos to the Toshiba facility at Kawasaki, Japan, where it was used to take ∼4 weeks of data radiographing the Toshiba Critical Assembly Reactor with cosmic ray muons. In this paper, we describe the analysis procedure, show results of this experiment, and compare the results to Monte Carlo predictions. The results validate the concept of using cosmic rays to image the damaged cores of the Fukushima Daiichi reactors.

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New Developments in Proton Radiography at the Los Alamos Neutron Science Center (LANSCE)

et al. 2015

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An application of nuclear physics, a facility for using protons for flash radiography, has been developed at the Los Alamos Neutron Science Center (LANSCE). Protons have proven far superior to high energy x-rays for flash radiography because of their long mean free path, good position resolution, and low scatter background. Although this facility is primarily used for studying very fast phenomena such as high explosive driven experiments, it is finding increasing application to other fields, such as tomography of static objects, phase changes in materials and the dynamics of chemical reactions. The advantages of protons are discussed, data from some recent experiments will be reviewed and concepts for new techniques are introduced.

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Charged particle radiography

Cited by 53 publications

References 96 publications

Z-petawatt driven ion beam radiography development.

Z-petawatt driven ion beam radiography development.

Analysis of muon radiography of the Toshiba nuclear critical assembly reactor

New Developments in Proton Radiography at the Los Alamos Neutron Science Center (LANSCE)

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