Simultaneous neutron and x-ray imaging of inertial confinement fusion experiments along a single line of sight at Omega.
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. 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.
Los Alamos National Laboratory, Los Alamos, New Mexico 87544, USA.
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Danly
Los Alamos National Laboratory, Los Alamos, New Mexico 87544, USA.
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Day
Lawrence Livermore National Laboratory, Livermore, California 94550, USA.
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Fittinghoff
Los Alamos National Laboratory, Los Alamos, New Mexico 87544, USA.
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Herrmann
Lawrence Livermore National Laboratory, Livermore, California 94550, USA.
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Izumi
Los Alamos National Laboratory, Los Alamos, New Mexico 87544, USA.
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Kim
Los Alamos National Laboratory, Los Alamos, New Mexico 87544, USA.
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Martinez
Los Alamos National Laboratory, Los Alamos, New Mexico 87544, USA.
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Merrill
Los Alamos National Laboratory, Los Alamos, New Mexico 87544, USA.
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Schmidt
Los Alamos National Laboratory, Los Alamos, New Mexico 87544, USA.
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Simpson
Los Alamos National Laboratory, Los Alamos, New Mexico 87544, USA.
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Volegov
Los Alamos National Laboratory, Los Alamos, New Mexico 87544, USA.
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Wilde