Figure 57

Figure 57: Electron contribution to crust viscosity and effect of impurities. Solid lines – perfect one-component plasma. Dashed line – admixture of impurities with n = 0.05n imp i and |Z − Zimp | = 2. Curves are labeled by log10T [K]. Impurity contribution to ηe becomes dominant for T ≪ Tpi: this is visible for a log10 T[K ] = 7 curve. Ground-state crust model of Negele & Vautherin [303] is used. Figure made by A.Y. Potekhin.