Distribution of magnetic field in the coaxial accelerator of impulse plasma

The existing descriptions of the plasma spreading in a coaxial accelerator are based on the snow plough model. This model is not suitable for describing the behaviour of impulse plasma during the IPD synthesis of materials. It has been found that, in this process, caused by the quasi-stationary mode of generation, the impulse plasma when spreading within the accelerator, soon loses its radial symmetry. It has also been found that it can be reduced by using the external electrode made of a ferromagnetic material. Present measurements of magnetic field in the accelerator interelectrode space demonstrate a magnetic field distribution dependence on the presence or not of ferromagnetic material in coaxial accelerator construction. The experiments suggest that the use of ferromagnetic material in coaxial accelerator construction reduces harmful deformation (and therefore erosion) of the side surface of the internal electrode. Copyright (C) 1996 Elsevier Science Ltd