Simultaneous neutron and x-ray imaging of inertial confinement fusion experiments along a single line of sight at Omega

Journal Article · Thu Apr 16 00:00:00 EDT 2015 · Review of Scientific Instruments

DOI:https://doi.org/10.1063/1.4918285· OSTI ID:1233523

Danly, C. R. ^[1]; Day, T. H. ^[1]; Fittinghoff, D. N. ^[2]; Herrmann, H. ^[1]; Izumi, N. ^[2]; Kim, Y. H. ^[1]; Martinez, J. I. ^[1]; Merrill, F. E. ^[1]; Schmidt, D. W. ^[1]; Simpson, R. A. ^[1]; Volegov, P. L. ^[1]; Wilde, C. H. ^[1]

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1. Los Alamos National Lab. (LANL), Los Alamos, NM (United States)
2. Lawrence Livermore National Lab. (LLNL), Livermore, CA (United States)

Neutron and x-ray imaging provide critical information about the geometry and hydrodynamics of inertial confinement fusion implosions. However, existing diagnostics at Omega and the National Ignition Facility (NIF) cannot produce images in both neutrons and x-rays along the same line of sight. This leads to difficulty comparing these images, which capture different parts of the plasma geometry, for the asymmetric implosions seen in present experiments. Further, even when opposing port neutron and x-ray images are available, they use different detectors and cannot provide positive information about the relative positions of the neutron and x-ray sources. A technique has been demonstrated on implosions at Omega that can capture x-ray images along the same line of sight as the neutron images. Thus, the technique is described, and data from a set of experiments are presented, along with a discussion of techniques for coregistration of the various images. It is concluded that the technique is viable and could provide valuable information if implemented on NIF in the near future.

• Research Organization: Los Alamos National Lab. (LANL), Los Alamos, NM (United States)
• Sponsoring Organization: USDOE
• Grant/Contract Number: AC52-06NA25396
• OSTI ID: 1233523
• Alternate ID(s): OSTI ID: 1228190
• Report Number(s): LA-UR-15-21310; RSINAK
• Journal Information: Review of Scientific Instruments, Vol. 86, Issue 4; ISSN 0034-6748
• Publisher: American Institute of Physics (AIP)
• Country of Publication: United States
• Language: English

Related Subjects

46 INSTRUMENTATION RELATED TO NUCLEAR SCIENCE AND TECHNOLOGY
70 PLASMA PHYSICS AND FUSION TECHNOLOGY
x-ray imaging
neutrons
neutron imaging
image reconstruction
neutron sources