Modeking of many particle systems in plasma physics  Page description

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Details of project

  
Identifier
48389
Type K
Principal investigator Donkó, Zoltán
Title in Hungarian Plazmafizikai sokrészecske-rendszerek modellezése
Title in English Modeking of many particle systems in plasma physics
Panel Physics 1
Department or equivalent Laser Physics Dept. (Research Institute for Solid State Physics and Optics Hung. Acad. Sci.)
Participants Hartmann, Péter
Kutasi, Kinga
Starting date 2005-01-01
Closing date 2009-06-30
Funding (in million HUF) 14.400
FTE (full time equivalent) 7.14
state closed project





 

Final report

  
Results in Hungarian
A pályázat keretében végzett munkánk a gázkisülés- és plazmafizika egyes rendszereinek, illetve alapjelenségeinek megértését célozta, nagyrészt a numerikus modellezés és szimulációk által nyújtott lehetőségek kihasználásával. A modellezés mellett kísérleteket is végeztünk eredményeink ellenőrzésére, valamint számítási eredményeinket együttműködő csoportok elméleti, illetve kísérleti eredményeivel hasonlítottuk össze. Az alacsonyhőmérsékletű egyenáramú gázkisülések területén vizsgáltuk az elektronok kinetikáját egyszerű gázokban és komplex gázelegyekben (pl. levegő), elemeztük a gázkisülések modelljeinek korlátait, hiányosságait, foglalkoztunk különleges, pl. gyors atomok általi gerjesztési folyamatokkal. Rádiófrekvenciás gerjesztésű gázkisülésekben vizsgáltuk az elektronok fűtési folyamatait, a plazma tér- és időbeli fejlődésének sajátosságait, valamint annak lehetőségeit, hogy az elektródákra érkező ionok fluxusa és energiája miként állítható be egymástól függetlenül (ez a plazmaalapú megmunkálási folyamatok szempontjából elsődleges fontosságú). A komplex plazmák (erősen csatolt sokrészecske-rendszerek) kutatása területén Yukawa és Coulomb kölcsönhatási poteciállal jellemezhető rendszerek leírásával foglalkoztunk. Kétdimenziós rendszerekre vizsgáltuk a szilárd-folyadék fázisátalakulást, a transzportjellemzőket és a kollektív gerjesztéseket.
Results in English
In the framework of the project our aim had been to understand the characteristics of systems in gas discharge and plasma physics, by means of numerical modeling and simulations. In order to confirm our modeling results we have also carried out experimental studies, or have cross-checked our results with experimental and/or theoretical results of collaborating partners. In our studies of low pressure steady state gas discharges we have examined the electron kinetics in simple gases as well as in complex gas mixtures (like air), we have clarified the limitations of gas discharge models, and investigated special (e.g. fast atom impact) excitation processes in gas discharges. We have studied the electron heating mechanisms in radiofrequency-excited discharges, the peculiarities of spatial and temporal development of discharge characteristics and the possibilities of the independent control of the energy and flux of ions reaching the surface of the electrodes. These properties play a key role in the plasma-suface interaction in processing plasmas. In the field of strongly coupled plasmas we have investigated many-particle systems characterized by Coulomb and Yukawa interaction potentials. We have studied the solid-liquid phase transition, transport processes, as well as collective excitations in two-dimensional systems.
Full text https://www.otka-palyazat.hu/download.php?type=zarobeszamolo&projektid=48389
Decision
Yes





 

List of publications

  
Baguer N, Bogaerts A, Donkó Z, Gijbels R, Sadeghi N: Study of the Ar metastable atom population in a hollow cathode discharge by means of a hybrid model and spectroscopic measurements, J. Appl. Phys. 97; 123305, 2005
Kutasi K, Hartmann P, Bánó G, Donkó Z: He2+ molecular ions in helium glow discharges: the effect of bulk electron temperature, Plasma Sources Sci. Technol.; 14, S1-S8, 2005
Hartmann P, Donkó Z, Kalman G J: Structure and phase diagram of strongly-coupled bipolar charged-particle bilayers, Europhysics Letters; 72, 396-402, 2005
Kutasi K, Hartmann P, Donkó Z: Self-consistent modeling of glow discharges, Padeu 15; 147, 2005
Hartmann P, Kalman G J, Donkó Z, Kutasi K: Equilibrium properties and phase diagram of two-dimensional Yukawa systems, Phys. Rev. E; 72, 026409, 2005
Kalman G J, Golden K I, Donkó Z, Hartmann P: The Quasilocalized Charge Approximation, J. Phys. Conf. Series; 11, 254-267, 2005
Sullivan T, Kalman G J, Kyrkos S, Bakshi P, Rosenberg M, Donkó Z: Phonons in Yukawa lattives and liquids, J Phys A: Math Gen; 39, 4607-4611, 2006
Donkó Z, Petrovic Z Lj: Analysis of a capacitively coupled dual-frequency CF4 discharge, Jpn J Appl Phys; 45, 8151-8156, 2006
Donkó Z, Hartmann P, Kutasi K: On the reliability of low-pressure dc glow discharge modelling, Plasma Sources Sci Technol; 15, 178?186, 2006
Hartmann P, Kalman G J, Donkó Z: Two-dimensional Yukawa liquids: structure and collective excitations, J Phys A: Math Gen; 39, 4485-4491, 2006
Hartmann P, Donkó Z, Kalman G J, Lévai P: Molecular dynamics simulation of strongly coupled QCD plasmas, Nucl Phys A; 774, 881-884, 2006
Donkó Z, Goree J, Hartmann P, Kutasi K: Shear viscosity and shear thinning in two-dimensional Yukawa liquids, Phys Rev Lett; 96, 145003, 2006
Mahassen H, Kutasi K, Golden K I, Kalman G J, Donkó Z: Longitudinal collective modes in asymmetric charged-particle bilayers, J Phys A: Math Gen; 39, 4601-4605, 2006
Rosenberg M, Kalman G J, Kyrkos S, Donkó Z: Beam-plasma interaction in strongly coupled plasmas, J Phys A: Math Gen; 39, 4613-4618, 2006
Sigeneger F, Donkó Z, Loffhagen D: Boltzmann equation and particle-fluid hybrid modelling of a hollow cathode discharge, Eur. Phys. J. Appl. Phys.; 38, 161-167, 2007
Hartmann P, Donkó Z, Bakshi P, Kalman G J, Kyrkos S: Molecular dynamics studies of the solid-liquid phase transition in 2D Yukawa systems, IEEE Trans. Plasma Sci., 35, 332-336, 2007
Hartmann P, Donkó Z, Kalman G J, Kyrkos S, Rosenberg M, Bakshi P: Collective modes in 2D Yukawa solids and liquids, IEEE Trans. Plasma Sci., 35, 337-340, 2007
Bánó G, Hartmann P, Kutasi K, Horváth P, Plasil R, Hlavenka P, Glosik J, Donkó Z: Combined Langmuir probe, electrical and hybrid modelling characterization of helium glow discharges, Plasma Sources Sci. Technol. 16, 492–500, 2007
Donkó Z, Hartmann P, Kutasi K: Effects of fast neutral particles in low-pressure gas discharges, J. Phys. Conf. Series 71, 021008/1-15, 2007
Kalman G J, Hartmann P, Donkó Z, Golden K I: Collective excitations in electron-hole bilayers, Phys. Rev. Lett. 98, 236801/1-4, 2007
Donkó Z, Hartmann P, Goree J: Shear viscosity of strongly-coupled two-dimensional Yukawa liquids: experiment and modeling, Modern Physics Letters B; 21, 1357-1376, 2007
Donkó Z, Petrovic Z Lj: Ion behavior in capacitively-coupled dual-frequency discharges, J. Phys. Conf. Series 86, 012011/1-10, 2007
Schulze J, Donkó Z, Heil B G, Luggenhölscher D, Mussenbrock T, Brinkmann R P, Czarnetzki U: Electric field reversals in the sheath region of capacitively coupled radio frequency discharges at different pressures, Journal of Physics D-Applied Physics; 41, 105214, 2008
Donkó Z and Hartmann P: Shear viscosity of strongly coupled Yukawa liquids, Physical Review E; 78, 026408, 2008
Golden K I, Kalman G J, Donkó Z and Hartmann P: Acoustic dispersion in a two-dimensional dipole system, Physical Review B; 78, 045304, 2008
Donkó Z, Kalman G J, Hartmann P: Dynamical correlations and collective excitations of Yukawa liquids, Journal of Physics-Condensed Matter; 20, 413101, 2008
Ott T, Bonitz M, Donkó Z and Hartmann P: Superdiffusion in quasi-two-dimensional Yukawa liquids, Physical Review E; 78, 026409, 2008
Feldmann J D, Kalman G J, Hartmann P, Rosenberg M: Ground State of Magnetic Dipoles on a Two-Dimensional Lattice: Structural Phases in Complex Plasmas, Phys. Rev. Lett. 100, 085001, 2008
Donkó Z, Schulze J, Heil B G and Czarnetzki U: PIC simulations of the separate control of ion flux and energy in CCRF discharges via the electrical asymmetry effect, Journal of Physics D-Applied Physics; 42, 025205, 2009
Donkó Z, Schulze J, Czarnetzki U and Luggenhölscher D: Self - excited nonlinear plasma series resonance oscillations in geometrically symmetric capacitively coupled radio frequency discharges, Applied Physics Letters; 94, 131501, 2009
Schulze J, Donkó Z, Luggenhölscher D and Czarnetzki U: Different modes of electron heating in dual-frequency capacitively coupled radio frequency discharges, Plasma Sources Science & Technology; 18, 034011, 2009
Donkó Z, Goree J, Hartmann P and Liu Bin: Time-correlation functions and transport coefficients of two-dimensional Yukawa liquids, Phys. Rev. E: 79, 026401, 2009
Plasil R, Korolov I, Kotrik T, Dohnal P, Bano G, Donkó Z and Glosik J: Non-Maxwellian electron energy distribution function in He, He/Ar, He/Xe/H2 and He/Xe/D2 low temperature afterglow plasma, Eur. Phys. J. D; 54, 391-398, 2009
Gordillo-Vazquez F J, Donkó Z.: Electron energy distribution functions and transport coefficients relevant for air plasmas in the troposphere: impact of humidity and gas temperature, Plasma Sources Science & Technology; 18, 034021, 2009
Czarnetzki U, Heil B G, Schulze J, Donkó Z, Mussenbrock T and Brinkmann R P: The Electrical Asymmetry Effect - A novel and simple method for separate control of ion energy and flux in capacitively coupled RF discharges, J.Phys.: Conf. Ser.; 162, 012010, 2009
Donkó Z, Hartmann P and Kalman G J: Two-dimensional dusty plasma crystals and liquids, J.Phys.: Conf. Ser.; 162, 012016, 2009
Golden K I, Kalman G J, Donkó Z and Hartmann P: Collective excitations in a two-dimensional dipole system, Journal of Physics A-Mathematical and Theoretical; 42, 214017, 2009
Hartmann P, Kalman G J, Golden K I and Donkó Z: Collective excitations in strongly coupled ultra-relativistic plasmas, Journal of Physics A-Mathematical and Theoretical; 42, 214018, 2009
Donkó Z: Molecular dynamics simulations of strongly coupled plasmas, Journal of Physics A-Mathematical and Theoretical; 42, 214029, 2009
Hartmann P, Donkó Z, Tierney K P, Lee C J and Kalman G J: Higher harmonic generation in strongly coupled plasmas, Journal of Physics A-Mathematical and Theoretical; 42, 214040, 2009
Schulze J, Schüngel E, Czarnetzki U, Donkó Z: Optimization of the electrical asymmetry effect in dual-frequency capacitively coupled radio frequency discharges: Experiment, simulation, and model, J. Appl. Phys. 106; 063307, 2009



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