ELECTROSTATIC ION-BERNSTEIN WAVES IN THE BLAAMANN DEVICE

This article is based on wave experiments performed in the toroidal pl asma device Blaamann, and a comparison between experimental and theore tical values for the dispersion relation. A motorized probe, which cou ld be moved in two axial directions, gave us the opportunity to invest igate spatial dependencies, in our case wavefronts of ion-Bernstein wa ves. The article demonstrates how wave measurements of this kind can b e used for obtaining ion temperature and density relations between the ion species H+, H-2(+) and H-3(+) in a weakly ionized hydrogen gas. T he resulting relations are compared with what was obtained in a simila r experimental set-up in the plasma device Thorello in Italy.