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1

Parallel implementation of a PIC simulation algorithm using OpenMP

Suciu Alin, Hangan Anca, Marginean Anca, Joldos Marius, Voitcu Gabriel, Echim Marius

Annals of Computer Science and Information Systems

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2020

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Vol. 21

381--385

EN

Particle-in-cell (PIC) simulations are focusing on the individual trajectories of a very large number of particles in self-consistent and external electric and magnetic fields; they are widely used in the study of plasma jets, for example. The main disadvantage of PIC simulations is the large simulation runtime,which often requires a parallel implementation of the algorithm. The current paper focuses on a PIC1d3v simulation algorithm and describes the successful implementation of a parallel version of it on a multi-core architecture, using OpenMP, with very promising experimental and theoretical results.

2

Zastosowanie technologii plazmowej do nanoszenia powłok na bazie Ni-Cr na podłoże ze stali i modyfikacja ich

Alonceva D.

Przegląd Elektrotechniczny

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2010

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R. 86, nr 7

42-44

PL

Doświadczalnie stwiedzono, że naniesienie powłok proszkowych PG-10N-01, PG-19N-01 i PGAN-33 metodą detonacji plazmowej z podwójną obróbką powierzchni powoduje powstawanie wielofazowych powłok. Stopienie powłok wiązką elektronów prowadzi do zmian rozkładupierwiastków. Powłoki posiadają mikrotwardość ok. 5 GPa. Metodą transmisyjnej mikroskopii elektronowej ustalono obecność faz amorficznej i krystalicznej.

EN

In the presented work it was empirically demonstrated that depositing PG-10N-01, PG-19N-01 and PGAN-33 (Russia Industrial Standard) powder coatings by plasma jets with the duplex surface treatment according to the parameters resulted in forming multi-phase dense coatings with intermetallic hardening compounds. The surface melting of coatings by electronic beam leads to redistribution of elements. The coatings have high microhardness of the same order of 5 GPŕ. TEM methods reveal that in coatings before irradiation form the amorphous and crystalline phases.

3

Geometry and electric power effects on specific impulse and efficiency of an arc-jet thruster

Kamińska A., Białek A., Dudeck M.

Journal of Technical Physics

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2008

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Vol. 49, no 2

101-112

EN

The properties of an argon D.C. arc-jet thruster for space propulsion functioning at low electric power (around 10 kW) and low mass flow (0.5 g/s) are determined. The physical description of the arc and jet plasma takes into account non-equilibrium conditions for local kinetic temperatures and ionization effect. The plasma properties (velocity, pressure, electron and heavy particles temperatures and densities) are calculated by a Navier-Stokes modeling. The influence of different plasma source geometry such as angle and length of the nozzle divergent part and electric power on thrust, specific impulse and arc-jet efficiency are discussed.

4

Studies of interaction of plasma jets generated in a plasma focus facility with an ambient plasma in external magnetic field

Filippov N., Filippova T., Filippov A., Friart D., Karakin M., Khautiev E., Krauz V., Mokeev A., Myalton V., Nikulin S., Simonet F., Tykshaev V. P., Vierne J., Vinogradov V. P.

Nukleonika

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2001

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Vol. 46, nr 1

31-34

EN

The aim of the present experiments was to reproduce and to study in laboratory quasi-perpendicular supercritical collisionless shocks similar to the Earth-Solar Wind shock, by using a plasma focus facility as the plasma source. The experiments were performed on the PF-3 facility (Filippov-type plasma focus) at a level of energy supply of about 1 MJ. Directed plasma jets are produced with axial velocities ~107 cm/s after compression of a plasma-current sheath in the initial stage of plasma focus formation. These jets then travel through an ambient plasma resulting in early gas ionization by X-ray radiation from the plasma focus, and at an angle of 90° to the 2500 G external magnetic field applied by a system based on rear-earth magnets. Our experimental conditions allowed us to reach a range MA ~ 5÷10.