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Ignition conditions for inertial confinement fusion targets with a nuclear spin-polarized DT fuel

Abstract : The nuclear fusion cross-section is modified when the spins of the interacting nuclei are polarized. In the case of deuterium-tritium it has been theoretically predicted that the nuclear fusion cross-section could be increased by a factor δ = 1.5 if all the nuclei were polarized. In inertial confinement fusion this would result in a modification of the required ignition conditions. Using numerical simulations it is found that the required hot-spot temperature and areal density can both be reduced by about 15% for a fully polarized nuclear fuel. Moreover, numerical simulations of a directly driven capsule show that the required laser power and energy to achieve a high gain scale as δ−0.6 and δ−0.4 respectively, while the maximum achievable energy gain scales as δ0.9.
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http://hal.in2p3.fr/in2p3-00757752
Contributor : Sophie Heurteau <>
Submitted on : Tuesday, November 27, 2012 - 3:31:38 PM
Last modification on : Wednesday, September 16, 2020 - 4:08:24 PM

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M. Temporal, V. Brandon, B. Canaud, J.P. Didelez, R. Fedosejevs, et al.. Ignition conditions for inertial confinement fusion targets with a nuclear spin-polarized DT fuel. Nuclear Fusion, IOP Publishing, 2012, 52, pp.103011. ⟨10.1088/0029-5515/52/10/103011⟩. ⟨in2p3-00757752⟩

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