Typical burn profile for plasma with deuterium-tritium as the primary reaction fuel. Here represents the mean energy of the particle distributions, and what is plotted on the ordinate is 2/3 this value. If the particles were in equilibrium, this would correspond to the temperature of the particles. The deuterium, tritium, electron, and photon temperatures (not shown in this figure) were initially held at with equimolar amounts of deuterium and tritium corresponding to .
Effective temperature profile of photon distribution as a function of time.
Number densities of the various particle species as a function of time.
Reaction rates for various fusion processes as a function of time.
Deuteron and triton energy distributions at various times during the burn calculation. Panel (a) shows distributions at , (b) , (c) , and (d) . For comparison panel (a) also shows a sample Maxwellian distribution with temperature and normalized to particles per .
Percentage of deterium/tritium not in equilibrium as a function of time.
Excess kurtosis of deuterium and triton distributions as defined in Eq. (18).
Comparison of mean energies between full Fokker–Planck run and run where Maxwellian distributions are used after every timestep. Panel (a) shows comparison for deuteron mean energies, (b) shows comparison for triton mean energies. Note that for runs using Maxwellian distributions, the ordinate is equivalent to temperature.
Relative difference between Fokker–Planck DT fusion rates and thermal DT fusion rates.
Mean energies of tritons and deuterons around their peak values.
Fusion products’ energy distributions at various times. Panel (a) shows distributions at , (b) , (c) , and (d) .
Background temperatures derived from fitting Maxwell–Boltzmann distributions at low energies using distributions shown in Fig. 11 (see text).
Percentage of fusion products not in equilibrium (a) and excess kurtosis of fusion products (b) as a function of time.
Results comparing full Fokker–Planck runs shown with solid lines and Fokker–Planck runs with Planckian photon distributions enforced after every timestep shown with dashed lines. Panel (a) shows difference between photon effective temperatures, (b) shows difference in electron temperatures, (c) shows difference in deuteron temperatures, and (d) shows difference in photon number densities.
Burn profiles for runs with different initial conditions. Panels [(a)–(c)] had initial concentrations of DT fuel, whereas [(d)–(f)] had . Panels [(a) and (d)] had all species initially held at , [(b) and (e)] held at , and [(c) and (f)] held at .
Effect of xenon dopant on electron, deuteron, photon, and xenon temperatures. Line has no dopant, has dopant at the amount of initial deuterium, , and .
Fusion reactions included in study.
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