%0 Journal Article
%T Species separation and modification of neutron diagnostics in inertial-confinement fusion
%A Aurelie Inglebert
%A Benoit Canaud
%A Olivier Larroche
%J Physics
%D 2014
%I arXiv
%R 10.1209/0295-5075/107/65003
%X The different behaviours of deuterium (D) and tritium (T) in the hot spot of marginally-igniting cryogenic DT inertial-confinement fusion (ICF) targets are investigated with an ion Fokker-Planck model. With respect to an equivalent single-species model, a higher density and a higher temperature are found for T in the stagnation phase of the target implosion. In addition, the stagnating hot spot is found to be less dense but hotter than in the single-species case. As a result, the fusion reaction yield in the hot spot is significantly increased. Fusion neutron diagnostics of the implosion find a larger ion temperature as deduced from DT reactions than from DD reactions, in good agreement with NIF experimental results. ICF target designs should thus definitely take ion-kinetic effects into account.
%U http://arxiv.org/abs/1406.7108v1