At this specialized conference on nuclear energy we reported results on investigation of interaction between hydrogen radicals and a part of a divertor tail obtained from one of the most sophisticated fusion reactors in the world – ASDEX Upgrade (Germany). Experiments with extremely reactive hydrogen plasma were performed at EU solar facilities MESOX, France. The interaction probabilities were calculated at extreme conditions. To the best of our knowledge, no such experiments have been performed elsewhere.
B.03 Paper at an international scientific conference
COBISS.SI-ID: 23243303Interaction between hydrogen plasma and fusion relevant W-C composites was explained by heterogeneous surface reactions at elevated temperatures. Systematic experiments were performed in collaboration with Solar centre Font Romeu and the results confirmed our originally hypothesis about highly selective erosion at elevated temperature.
B.03 Paper at an international scientific conference
COBISS.SI-ID: 24410663A kinetic one-dimensional model of a bounded plasma system was upgraded in order to include non-zero drif velocities into the distribution functions of the electrons. It turns out that even very small values of the drift velocities affect strongly the collector floating potential. For certain values of the parameters our model predicts triple valued floating potential of the collector. The predictions of our model are in excellent qualitative and to some extent also quantitative agreement with the experimental results reported approximately 10 years ago, but were not interpreted adequately.
B.03 Paper at an international scientific conference
COBISS.SI-ID: 6625876One of the researchers of our project group had in april 2008 at the University of Innsbruck, a series of 3 invited lectures on potential formation in complex plasmas that contain more than 2 species of charged particles. The emphasis was on plasmas that contain two species of positive ions. He was invited as a lecturer on a special plasma physics course intended for PhD students of plasma physics at the University of Innsbruck. Besides him other lecturers, also world's leading authorities in the field, were invited.
B.05 Guest lecturer at an institute/university
COBISS.SI-ID: 21787687Understanding potential formation in front of plasma boundaries in complex plasmas with more than two species of charged particles is important in fusion research. The potential drops determine the ion flux and the ion impact energy on the wall. In this work we study the dependence of the floating potential of the collector on various parameters in a plasma that contains two species of positive ions, while the electrons have a two-temperature velocity distribution. Special attention is focused on the dependence on the density ratio of ions as well as on the electron temperature ratios.
B.03 Paper at an international scientific conference
COBISS.SI-ID: 7263828