in Figure 12.

In the C-DEF model, different burning regions are macroscopically well-mixed. As a consequence, it forms a broad region in which the electron capture products ($^{56}$Fe, $^{54}$Fe, and $^{58}$Ni), complete-silicon burning products ($^{56}$Ni), intermediate mass elements ($^{32}$S, $^{28}$Si, $^{24}$Mg), and unburned elements ($^{16}$O and $^{12}$C) coexist (when averaging in the zenith angle). This region is surrounded by unburned material at radii not reached by the flame. An enhancement of C and O near the center due to the large-scale deflagration mixing is visible. These are typical of 2D deflagration models; this smoothing effect tends to be suppressed in 3D deflagration models (Röpke et al. 2007b).

In the C-DDT model, the inner region below $\sim 8,000$ km s$^{-1}$ has a similar structure to that in the deflagration model. The difference is seen in the innermost region, where unburned C and O are burned into intermediate mass elements by the detonation wave. In this model, C is almost completely burned, but there still remains O with a mass fraction of $\sim 0.1$, since the detonation in this model leads to carbon or oxygen burning.

Surrounding the deflagration region is the oxygen burning layer, where $^{28}$Si, $^{32}$S, and $^{24}$Mg are the 