Bulg. J. Phys. vol.33 no.s3 (2006), pp. 229-234

Radial Structure of Coaxial Discharges Sustained by Travelling Azimuthally Symmetric Waves

Z. Neichev1, E. Benova2, A. Gamero3, A. Sola3
1Faculty of Physics, University of Sofia, 5 James Bourchier Blvd., BG-1164 Sofia, Bulgaria
2University of Sofia, 27 Kosta Loulchev Str., BG-1111 Sofia, Bulgaria
3Departamento de Física, Universidad de Córdoba, Campus Universitario de Rabanales (ed. C2), E-14071 Córdoba, Spain
Abstract. The purpose of this work is to investigate the radial distribution of the wave and plasma characteristics of microwave discharges sustained by azimuthally symmetric (m = 0) waves travelling along a coaxial structure at low pressure and to compare their characteristics with those of the cylindrical plasma column at similar discharge conditions. The investigation is based on a numerical one-dimensional radial fluid model. The basic relations in this model are Maxwell’s equations. Plasma characteristics and the wave radial profiles were obtained and compared.

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