  Self-heating condition and following ignition in an Inertial Confinement
Fusion (ICF) fuel pellet is evaluated by calculating the power equations,
dynamically. In fact, the self-heating condition is a criterion that determines
the minimum parameters of a fuel (such as temperature, density and areal
density) that can be ignited. Deuterium is the main component of ICF fuels as
large amounts of it are naturally available. In addition, the use of deuterium
as a fuel in ICF causes the production of tritium and helium-3. However, pure
deuterium has a high ignition temperature (T$\geq$40 keV) which makes it
inefficient. In this paper, the power equations are solved, dynamically, and it
has been indicated that internal tritium and helium-3 production at early
evolution of compressed deuterium fuel causes ignition at lower predicted
temperatures.
