Original scientific paper published in a classical journal covering the field of nuclear materials presents our results on removal of carbon deposits from fusion devices. To the best of our knowledge it is the first report worldwide on controlling the removal rate. The reaction probabilities were calculated from measured flux of radicals and corresponding thickness of the deposit.
COBISS.SI-ID: 22709799
The paper was published in a top-quality journal specialized in surfaces and interfaces. Systematic research on interaction between hydrogen plasma and oxidized tungsten revealed that the oxygen could be removed from the substrate by treatment with highly reactive hydrogen plasma providing the probability for heterogeneous surface recombination of hydrogen atoms is high. We clearly showed that the coefficient depends enormously on the surface properties.
COBISS.SI-ID: 23813415
Using a one-dimensional kinetic model the dependence of the collector floating potential was predicted as a function of the hot to cool electron density and temperature ratio. To our knowledge we were the first group to include three different electron populations into such a model. The Poisson equation was solved numerically and axial profiles of the moments of the particle distribution function were predicted. All the results of the model and of the numerical solutions are in excellent agreement with the results of the PIC computer simulations.
COBISS.SI-ID: 6506068
For certain values of the plasma parameters the Bohm criterion is triple valued. Three methods to select the correct Bohm velocity are compared. Our main contribution in this work is the method which is based on the numerical solution of the Poisson equation. The transition from the low to the high Bohm velocity occurs at the parameters where the numerically found space charge density profile indicates the formation of a double layer in the sheath. These parameters are always identical to the parameters found with the maximum positive ion flux method, when the latter can be applied.
COBISS.SI-ID: 7051604
We developed a one-dimensional fluid model, which we then used for the anlysis of the potential formation in front of an electron emitting electrode immersed in a plasma that contains a mono-energetic electron beam with an isotropic velocity distribution. Our model explains triple floating potentials of electron emitting electrodes, which were observed experimentally, but so far the explanation has been only qualitative. Our model offers a quantitative explanation taking into account space charge effects of emitted electrons.
COBISS.SI-ID: 7855956