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P: Plasmaphysik

P 4: Diagnostik 1; Niedertemperaturplasmen / Plasmatechnologie 2; Magnetischer Einschluß 2

P 4.4: Poster

Montag, 27. März 2006, 17:00–19:00, Flure

Investigation of helium plasma stream parameters in experiments on surface modification — •Nadiya Sydorenko — I.E. Garkusha, A.N. Bandura, A.M. Bovda et al.//Proc. of the 1st International Congress on Radiation Physics, High Current Electronics and Modification of Materials. 5th Conference on Modification of Materials with Particle Beams and Plasma Flows. Tomsk,

Processing of different constructional materials with pulsed plasma streams is one of prospective methods of surface modification. This paper is focused on investigation of helium plasma streams generated by pulsed plasma accelerator (PPA) No-dqProsvetNo-dq [a]. The main objection of this study is adjustment of plasma treatment regimes for different materials that allows achieving optimal thickness of modified layer with simultaneously minimal value of surface roughness. With use of optical spectroscopy, detailed information about the basic plasma parameters - electron density, electron and ion temperatures, plasma stream duration and velocity, was obtained. Integrated spectra of plasma radiation were analyzed. The majority of helium and impurity elements spectral lines were investigated on a subject of Stark broadening. Their full intensities and intensities of continuum were estimated.The obtained results are used in technological applications of pulsed plasma processing.