ABSTRACT

This chapter provides an investigation of electron ion processes in the boundary layer between the flow of shock-heated dense gases and metal surface. The shock wave reflection and repetitive gas compression occured on this wall, so that gas parameters, temperature and ionization degree increased. The data presented specify that in the boundary layer between the surfaces of metals and shock-heated gases the different processes of separation of charges occur. To explain the experimental results, it should be noted that electrodes contacting with the plasma plug are similar to a double electrical probe. The shock waves studied in the present paper may be considered as strong. lt is known that at reflection of strong shock waves from a rigid obstacle a two-fold increase in internal gas energy occurs. The pulse electrical signals on electrodes arise at their contact with plasma plug formed by the shock compression of gases.