Surface modification of steel inductor as an approach to enchance its durability in high pulsed magnetic fields

The work concerns both a theoretical analysis of magnetic and thermal effects in conductor with inhomogeneous initial conductivity and realization of this approach on steel, oriented on inductors production, by steel surface modification. Monotonically changing spe-cific resistance of steel was suggested to be realized via steel pack chromizing.This work was performed as part of state task No. 0389-2015-0025 and supported in part by RAS Program Project No.18-2-2-8

Influence of the space charge on the configuration of conical spikes on a liquid-metal surface

The influence of the space charge of ions evaporated from the surface of a conical spike that develops on a liquid-metal anode on the spike shape has been studied theoretically. A possibility of the self-similar reduction of the equations that govern the space distributions of the electric field, ion velocity field, and space charge density to a system of ordinary differential equations has been revealed. Its solution, which is compatible with the balance condition for the capillary and electrostatic forces at a free liquid surface, has allowed us to obtain the current-voltage characteristic for a liquid-metal ion source and the current dependence of the cone angle. An increase in emission current leads to a monotonic decrease of the cone angle, which agrees with the available experimental data