No abstract

No abstract

No abstract

New features and peculiarities of anomalous self-sustained Hall E × B discharge have been discovered. The presence of a minimum density of ions n upon the magnetic field induction B is confirmed for a wide range of discharge parameters. Likewise, the operation mode for a maximum density at the optimal values of the radial and longitudinal components of magnetic induction was discovered. Both effects are accompanied by the changes in the position of the combustion zone E × B of the discharge in the anode-cathode interval and the transformation of the distribution function of the ion energy. The threshold nature of the processes in the plasma E × B of the discharge can be manifested on the curves n = f(B) as an abrupt 3 to 4 times decrease in density upon the increase in B by not more than 10%. An abrupt increase in the density of ions (up to 16 times), occurring with a slight increase in the density of neutrals (∼1.2 times), is recorded when there are jumps of the anode layer from the anode region to the cathode one and vice versa. A thin structure of ion energy spectra explained by the isomagnetic potential jumps, which generate ion density jumps in a narrow energy range, was found. In the search for the reasons for the restructuring of the discharge and generation of isomagnetic jumps, the possible effect of nonlocal gradient-drift and electron-cyclotron drift instabilities on electron mobility and ion acceleration is briefly discussed.

No abstract

No abstract

No abstract

Anodic oxide films of zinc oxide in an aqueous solution of K Cl (0.1 M; 0.5 M and 1 M) were obtained by electrochemical oxidation of zinc metal. Zinc electrode was used as anode and platinum plate as cathode. The study discusses the influence of the concentrations of K Cl solution and the voltage applied to the electrochemical cell on the morphology of the obtained anode films, as well as their thermodynamic stability. The analysis of volt-ampere curves of linear potential sweep and chronoamperometric dependences showed that oxidation in 0.1 M K Cl solution at a voltage of 7.5 V allows to obtain continuous stable defect-free Zn O films on metal zinc.