Remarks on detecting high-energy deuterium–tritium fusion gamma rays using a gas Cherenkov detector

Mack, J. M.; Berggren, R. R.; Caldwell, S. E.; Christensen, C.; Evans, S.; Faulkner, J. R.; Griffith, R. L.; Hale, Gerald M.; King, R. S. B.; Lash, D. K.; Lerche, R. A.; Oertel, J. A.; Pacheco, Daniel; Young, C. S.

doi:10.1016/j.radphyschem.2005.12.026

Cited by 27 publications

(3 citation statements)

References 14 publications

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“…Time histories of the 16.7 MeV γ-rays produced by a small fraction, ∼ 4×10 −5 , of DT fusion reactions can be used to measure the bang time and burn width 50,51 . Nuclear interactions between fusion neutrons and nuclei can also produce γ-rays.…”

Section: γ-Ray Diagnosticsmentioning

confidence: 99%

Synthetic nuclear diagnostics for inferring plasma properties of inertial confinement fusion implosions

et al. 2018

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A suite of synthetic nuclear diagnostics has been developed to post-process radiation hydrodynamics simulations performed with the code Chimera. These provide experimental observables based on simulated capsule properties and are used to assess alternative experimental and data analysis techniques. These diagnostics include neutron spectroscopy, primary and scattered neutron imaging, neutron activation, γ-ray time histories and carbon γ-ray imaging. Novel features of the neutron spectrum have been analysed to infer plasma parameters. The nT and nD backscatter edges have been shown to provide a shell velocity measurement. Areal density asymmetries created by low mode perturbations have been inferred from the slope of the downscatter spectrum down to 10 MeV. Neutron activation diagnostics showed significant aliasing of high mode areal density asymmetries when observing a capsule implosion with 3D multimode perturbations applied. Carbon γ-ray imaging could be used to image the ablator at high convergence ratio. Time histories of both the fusion and carbon γ signals showed a greater time difference between peak intensities for the perturbed case when compared to a symmetric simulation.

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Section: γ-Ray Diagnosticsmentioning

confidence: 99%

Synthetic nuclear diagnostics for inferring plasma properties of inertial confinement fusion implosions

et al. 2018

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“…This means that the quantity of deuterium in the oceans is about 10 14 tonnes. The deuterium-tritium fusion reaction is the most promising, because of the magnitude of forces between nuclear particles (Mack et al, 2006;Freidberg, 2008). In fusion reaction, small quantities of matter are converted into enormous amounts of energy.…”

Section: Deuterium Reservoirmentioning

confidence: 99%

Ocean exergy and energy conversion systems

Miguel

Aydın

2012

IJEX

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Oceans store energy in the form of currents, waves, tides, heat and salinity that can help to alleviate worldwide demand for power and the global climate change threat. They also store a considerable amount of an isotope of hydrogen (deuterium) which takes part in the most promising fusion reactions. Exergy analysis can be applied to evaluate the work potential (extractable) of a resource. This paper focuses on the exergy content of ocean reservoirs and provides a review of the technology installed for harvesting ocean energy.

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“…The gamma ray has no temporal dispersion which allows the diagnostic to be placed further from the implosion, reducing the neutron and x-ray fluxes that impinge on sensitive parts of the diagnostic. 45 One approach to using the gamma ray as the reaction signature is to measure the gamma using a gas Cerenkov cell. 4648 A schematic of the diagnostic is shown in Figure 14 Several important measurements have been made with the GCD at the Omega facility as proof of this diagnostic technique.…”

Section: Neutron Diagnosticsmentioning

confidence: 99%

Inertial Confinement Fusion Research at Los Alamos National Laboratory

Batha

Albright

Alexander

et al. 2009

AIP Conference Proceedings

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Inertial confinement fusion research at Los Alamos National Laboratory is focused on high-leverage areas of thermonuclear ignition to which LANL can apply its historic strengths and that are complementary to high-energy-density-physics topics. Using the Trident and Omega laser facilities, experiments are pursued in laser-plasma instabilities, symmetry, Be technologies, neutron and fusion-product diagnostics, and defect hydrodynamics. 1. Overview Los Alamos National Laboratory (LANL) participates in the United States' Inertial Confinement Fusion (ICF) program through the National Ignition Campaign (NIC). As part of this national effort, LANL pursues research that will have a high impact on the attempt for thermonuclear ignition in 2010. A simplified timeline of an ignition shot on NIF would start with the laser beams entering the hohlraum, interacting with the Au wall, and creating a near-uniform volume of radiation. The radiation would cause the beryllium capsule to implode symmetrically, compressing the deuterium-tritium (DT) ice layer and causing thermonuclear reactions. The gamma rays and neutrons emitted would be measured by the Gamma Bang Time/Reaction History and Neutron Imaging System diagnostics, respectively, to determine the quality of the implosion.

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Remarks on detecting high-energy deuterium–tritium fusion gamma rays using a gas Cherenkov detector

Cited by 27 publications

References 14 publications

Synthetic nuclear diagnostics for inferring plasma properties of inertial confinement fusion implosions

Synthetic nuclear diagnostics for inferring plasma properties of inertial confinement fusion implosions

Ocean exergy and energy conversion systems

Inertial Confinement Fusion Research at Los Alamos National Laboratory

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