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Modelling of new generation plasma optical devices

Litovko I. V., Goncharov A. A., Dobrovolskiy A. N., Naiko L. V., Naiko I. V.

Nukleonika

2016

Vol. 61, No. 2

207--212

The paper presents new generation plasma optical devices based on the electrostatic plasma lens configuration that opens a novel attractive possibility for effective high-tech practical applications. Original approaches to use of plasma accelerators with closed electron drift and open walls for the creation of a cost- -effective low-maintenance plasma lens with positive space charge and possible application for low-cost, low-energy rocket engine are described. The preliminary experimental, theoretical and simulation results are presented. It is noted that the presented plasma devices are attractive for many different applications in the state-of-the-art vacuum-plasma processing.

Transient plasma loads to the ITER divertor surfaces : simulation experiments with QSPA Kh - 50

Garkusha I. E., Aksenov N. N., Chuvilo A. A., Landman I. S., Makhlaj V. A., Malykhin S. V., Pugachev A. T., Sadowski M. J., Skladnik-Sadowska E.

Nukleonika

2012

Vol. 57, No. 2

167-170

Experimental simulations of International Thermonuclear Experimental Reactor (ITER) transient events with relevant heat load and particle load parameters have been performed with a quasi-stationary plasma accelerator QSPA Kh-50. Pulsed plasma guns PPA and IBIS were also used for comparative studies of surface damages appearing under varying plasma parameters and sorts of plasma ions. Particular attention is paid to the material erosion due to particles ejection from the tungsten surfaces both in the form of droplets and solid dust. Generation mechanisms of the dust in the course of ELM-like plasma impacts to the tungsten surfaces are discussed

A method of impurity diagnostics in dense plasma systems

Tsarenko A. V., Chebotarev V. V., Sadowski M. J., Tereshin V. I.

Nukleonika

2001

Vol. 46, suppl. 1

37--40

The analysis of a plasma impurity composition in many plasma systems (such as coaxial plasma accelerators, magnetic- plasma compressors, plasma-focus devices, and others) is of great importance for plasma physics. In this work we have proposed a new spectral method for the determination of impurity concentrations in relation to the concentration of the main plasma (made of hydrogen in our case). This technique can be used e.g. for diagnostics of a peripheral zone in Plasma-Focus (PF) discharges, where LTE conditions must be fulfilled. Advantages of this method in comparison with other methods, as well as possible errors, are considered and discussed.