Fig. 3: Reflectivity, temperature and d.c. conductivity of MgO and (Mg,Fe)O.

a,b,c, Reflectivity (a), temperature (b) and d.c. conductivity (c). The bottom and top x axes represent the shock velocity and pressure, respectively. The colour scheme is the same as in Fig. 2, although the colours are more transparent in this figure. The solid lines represent the mean, and the shading represents ±standard deviation. Reflectivity estimates from ref. ⁴⁹ are included in a, and these are consistent with the DFT-MD calculations in this work. MgO B1, B2 and liquid phases are included in b⁴³. Note that temperature data for 39882 are not shown as we could not obtain a physically reasonable result. In c, estimates of the electrical conductivity obtained from ref. ⁴⁸ for MgO, (Mg_0.95,Fe_0.05)O and (Mg_0.75,Fe_0.25)O are shown as the brown solid line and the blue and grey dashed lines.