Evidence for stratification of deuterium-tritium fuel in inertial confinement fusion implosions
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Date
2012
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American Physical Society
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Abstract
Measurements of the $D(d, p)T$ $(dd)$ and $T(t, 2n)^{4}\text{He}$ $(tt)$ reaction yields have been compared with those of the $D(t, n)^{4}\text{He}$ $(dt)$ reaction yield, using deuterium-tritium gas-filled inertial confinement fusion capsule implosions. In these experiments, carried out on the OMEGA laser, absolute spectral measurements of $dd$ protons and $tt$ neutrons were obtained. From these measurements, it was concluded that the $dd$ yield is anomalously low and the $tt$ yield is anomalously high relative to the $dt$ yield, an observation that we conjecture to be caused by a stratification of the fuel in the implosion core. This effect may be present in ignition experiments planned on the National Ignition Facility.
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Deuterium-tritium, Deuterium-tritium fuels, National ignition facility, Omega laser, Reaction yields, Spectral measurement, Deuterium, Experiments, Explosions, Helium, Inertial confinement fusion, Tritium
Citation
Casey, D. T., Frenje, J. A., Gatu Johnson, M., Manuel, M. J. -., Rinderknecht, H. G., Sinenian, N., . . . Bacher, A. D. (2012). Evidence for stratification of deuterium-tritium fuel in inertial confinement fusion implosions. Physical Review Letters, 108(7), 075002. http://dx.doi.org/10.1103/PhysRevLett.108.075002
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© 2012 American Physical Society
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Article