TITLE

Effects of nonequilibrium particle distributions in deuterium-tritium burning

AUTHOR(S)
Michta, David; Graziani, Frank; Luu, Thomas; Pruet, Jason
PUB. DATE
January 2010
SOURCE
Physics of Plasmas;Jan2010, Vol. 17 Issue 1, p012707
SOURCE TYPE
Academic Journal
DOC. TYPE
Article
ABSTRACT
The effects of nonequilibrium particle distributions resulting from rapid deuterium-tritium burning in plasmas are investigated using a Fokker–Planck code that incorporates small-angle Coulomb scattering, bremsstrahlung, Compton scattering, and light-ion fusion. For inertial confinement fusion environments, it is found that deviations away from Maxwellian distributions for either deuterium or tritium ions are small and result in 1% changes in the energy production rates. The deuterium and tritium effective temperatures are not equal, but differ by only about 2.5% near the time of peak burn rate. Simulations with high Z (Xe) dopants show that the dopant temperature closely tracks that of the fuel. On the other hand, fusion product ion distributions are highly non-Maxwellian, and careful treatments of energy-exchange between these ions and other particles is important for determining burn rates.
ACCESSION #
47807091

 

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