Using millimeter-sized carbon-deuterium foils for high-precision deuterium-tritium neutron spectrum measurements in direct-drive inertial confinement fusion at the OMEGA laser facility
Harvard Dataverse (Africa Rice Center, Bioversity International, CCAFS, CIAT, IFPRI, IRRI and WorldFish)
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Title |
Using millimeter-sized carbon-deuterium foils for high-precision deuterium-tritium neutron spectrum measurements in direct-drive inertial confinement fusion at the OMEGA laser facility
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Identifier |
https://doi.org/10.7910/DVN/BNCGL4
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Creator |
M. Gatu Johnson, B. Aguirre, J. Armstrong, J.A. Fooks, C. Forrest, J.A. Frenje, V.Yu. Glebov, M. Hoppe, J. Katz, J.P. Knauer, W. Martin, C.E. Parker, H.G. Reynolds, M.E. Schoff, F.H. Séguin, C. Sorce, B. Sperry, C. Stoeckl, R.D. Petrasso
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Publisher |
Harvard Dataverse
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Description |
Millimeter-sized CD foils fielded close (order mm) to inertial confinement fusion (ICF) implosions have been proposed as a game-changer for improving energy resolution and allowing time-resolution in neutron spectrum measurements using the magnetic recoil technique. This paper presents results from initial experiments testing this concept for direct drive ICF at the OMEGA laser facility. While the foils are shown to produce reasonable signals, inferred spectral broadening is seen to be high (~5 keV) and signal levels low (by ~20%) compared to expectation. Before this type of foil is used for precision experiments, the foil mount must be improved, oxygen uptake in the foils better characterized, and impact of uncontrolled foil motion prior to detection investigated.
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Subject |
Physics
direct drive high resolution inertial confinement fusion magnetic recoil spectrometer neutron spectrometry |
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