Search academic texts

Information × Registration Number 0221U102171, 0115U004252 , R & D reports Title Investigation of mechanisms of plasma generation, transport and wave processes in the plasma of electrical discharges in metal vapors, gas and condenced media popup.stage_title Head Fedorovich Oleg A., Кандидат фізико-математичних наук Registration Date 28-01-2021 Organization Institute of Nuclear Research of the National Academy of Sciences of Ukraine popup.description2 The influence of metal impurities on the radiation (absorption) spectra and recombination processes of dense (non-ideal) plasma (DP) of pulsed discharge in water (PDW) has been studied. It is shown that the radiation (absorption) spectra and recombination processes in PDW plasma are very significantly influenced by various factors. It is noted that in the DP the experimental decay rate decreases to 6 orders of magnitude relative to the triple recombination calculated by the formulas. The decay coefficient is easily determined experimentally by changing the decay rate. It depends only on the concentration and does not depend on the plasma temperature. The values of the decay coefficients of the DP are best described by the photorecombination coefficients, taking into account only those energy levels of atoms that are observed experimentally. The developed recommendations can be used in the calculations of gas-phase nuclear reactors (GNR), GNR rocket engines, high-voltage pulse switching devices and high-voltage power lines. Mathematical models of new generation plasmodynamic systems of medium energy have been created. Accelerators with closed electron drift and open (gas) walls, which are one of the types of electric rocket motors and devices for ion-plasma surface treatment of materials, are considered. A hybrid model is developed in which ions and neutrals are described by a kinetic model and electrons by a hydrodynamic model. It is possible to create a powerful ion flux coming from one end of the system and it is possible to use such an accelerator as a small rocket engine. The thermoemission probe was used to study the distributions of plasma parameters in a helicon discharge excited by a "planar" induction antenna located behind a dielectric window at the end of the discharge chamber. An electrostatic energy analyzer with a braking field was used to study the energy distributions of plasma components (ions and electrons) of such discharge at its parameters. Product Description popup.authors popup.nrat_date 2021-01-28 Close