The detonation wave can also be characterized by the same tendency, although the temperature reached in the ashes is not a unique function of the fuel density anymore but also depends on the shock strength, the effect of which needs further investigation in hydrodynamic simulations. In the delayed detonation framework, the detonation is ignited after significant expansion of the WD, and thus the electron captures are almost always unimportant (§3.4). If there is still a high density region left after the deflagration, the detonation wave can convert the material chiefly into $^{56}$Ni by complete silicon burning. As the density decreases, the detonation nucleosynthesis is characterized by oxygen burning, carbon burning, and eventually burning ceases. Compared to the corresponding deflagration case at a similar burning stage, these stages are usually encountered at lower fuel densities, as the detonation compresses the burning material.

Structure of the ejecta
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Table 1 shows the global features of our calculations. In the C-DEF model, more than half of the WD material is left unburned. The final kinetic energy, $\sim 4 \times 10^{50}$ erg, is significantly lower than that inferred for normal SNe Ia. In the C-DDT model, $\sim 0.5 M_{\odot}$ of the C/O material is 