 ![Gate voltage dependence of the surface density of oxide charges and the surface-current density scaled to 00 $^{\circ}$C for doses of 000 kGy and 000 MGy. Results are obtained after annealing at 00 $^{\circ}$C for 00 minutes from test fields with crystal orientation &lt;000&gt; produced by CiS. For positive gate voltages, the electric field points towards the Si-SiO$_{0}$ interface.[]{data-label="Figure0"}](Bias_voltage_dependence_of_oxide_charge_density.eps "fig:") ![Gate voltage dependence of the surface density of oxide charges and the surface-current density scaled to 00 $^{\circ}$C for doses of 000 kGy and 000 MGy. Results are obtained after annealing at 00 $^{\circ}$C for 00 minutes from test fields with crystal orientation &lt;000&gt; produced by CiS. For positive gate voltages, the electric field points towards the Si-SiO$_{0}$ interface.[]{data-label="Figure0"}](Bias_voltage_dependence_of_surface_current_density.eps "fig:")  F