First-principles particle simulation and Boltzmann equation analysis of negative differential conductivity and transient negative mobility effects in xenon

Dyatko, N. A.

doi:10.1140/epjd/e2016-60726-4

Cited by 30 publications

(28 citation statements)

References 52 publications

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“…[41]. Time and, to a lesser degree, spatial dependent transport, as well as transport under the influence of e-e interactions, are now being investigated [39]. Techniques developed for electron and ion transport have been extended to fast neutrals and to positrons in gases.…”

Section: Discussionmentioning

confidence: 99%

“…In 1992, Kossyi et al [184] published a detailed review of reactions and recommended rate coefficients in N 2 /O 2 mixtures. Beginning in 1980 and under the auspices of the IUPAC task group on atmospheric chemical kinetic data evaluation, a number of papers were published 39 which provide some recommended rate coefficient data for species of interest in developing and emerging LTP applications. VAMDC (virtual atomic and molecular data center) [174] is another resource and, although developed mainly for astrophysics, it provides a common portal to a number of electronic databases containing recommended data relevant to modeling LTPs.…”

Section: Plasma Chemistry: Mechanisms Validation and Distributionmentioning

confidence: 99%

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The 2017 Plasma Roadmap: Low temperature plasma science and technology

Adamovich

Baalrud

Bogaerts

et al. 2017

J. Phys. D: Appl. Phys.

818

549

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Section: Discussionmentioning

confidence: 99%

Section: Plasma Chemistry: Mechanisms Validation and Distributionmentioning

confidence: 99%

The 2017 Plasma Roadmap: Low temperature plasma science and technology

Adamovich

Baalrud

Bogaerts

et al. 2017

J. Phys. D: Appl. Phys.

818

549

View full text Add to dashboard Cite

“…Linert and Zubek [8] obtained a detailed study on electron energy-loss spectroscopy of excited states of the pyridine molecules in the energy range 3.5-9.0 eV. Donko and Dyatko [9] examined two particular effects that appear in electron transport: the negative differential conductivity and transient negative mobility, via conventional Boltzmann equation analysis and via a novel particle simulation method that is devoid of all approximations that are adopted in the Boltzmann equation solution. Screening effects of plasmas on the formation of antihydrogen (H) in an arbitrary s-state from the ground state of the positronium atom (Ps) by antiproton (p) impact have been studied within the framework of charge-conjugation and time-reversal invariance [10].…”

Section: New Scientific Insightsmentioning

confidence: 99%

Advances in positron and electron scattering*

et al. 2016

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Abstract. The topical issue on Advances in Positron and Electron Scattering" combines contributions from POSMOL 2015 together with others devoted to celebrate the unprecedented scientific careers of our loyal colleagues and trusted friends Steve Buckman (Australian National University, Australia) and Michael Allan (University of Fribourg, Switzerland) on the occasion of their retirements. POSMOL 2015, the XVIII International Workshop on Low-Energy Positron and Positronium Physics and the XIX International Symposium on Electron-Molecule Collisions and Swarms, was held at Universidade NOVA de Lisboa, Lisboa, Portugal, from 17-20 July 2015. The international workshop and symposium allowed to achieve a very privileged forum of sharing and developing our scientific expertise on current aspects of positron, positronium and antiproton interactions with electrons, atoms, molecules and solid surfaces, and related topics, as well as electron interactions with molecules in both gaseous and condensed phases. Particular topics include studies of electron interactions with biomolecules, electron induced surface chemistry and the study of plasma processes. Recent developments in the study of swarms are also fully addressed.

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“…simulations based on the Boltzmann equation, e.g. [7,8] or particle in cell (PIC-MCC) simulations, e.g. [9,10] neutrals are treated as a homogeneous background, and their interaction with surfaces is not included in the description.…”

Section: Introductionmentioning

confidence: 99%

Towards an integrated modeling of the plasma-solid interface

Bönitz

Filinov

Abraham

et al. 2019

Front. Chem. Sci. Eng.

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Solids facing a plasma are a common situation in many astrophysical systems and laboratory setups. Moreover, many plasma technology applications rely on the control of the plasma-surface interaction, i.e. of the particle, momentum and energy fluxes across the plasma-solid interface. However, presently often a fundamental understanding of them is missing, so most technological applications are being developed via trial and error. The reason is that the physical processes at the interface of a low-temperature plasma and a solid are extremely complex, involving a large number of elementary processes in the plasma, in the solid as well as fluxes across the interface. An accurate theoretical treatment of these processes is very difficult due to the vastly different system properties on both sides of the interface: quantum versus classical behavior of electrons in the solid and plasma, respectively; as well as the dramatically differing electron densities, length and time scales. Moreover, often the system is far from equilibrium. In the majority of plasma simulations surface processes are either neglected or treated via phenomenological parameters such as sticking coefficients, sputter rates or secondary electron emission coefficients. However, those parameters are known only in some cases and with very limited accuracy. Similarly, while surface physics simulations have often studied the impact of single ions or neutrals, so far, the influence of a plasma medium and correlations between successive impacts have not been taken into account. Such an approach, necessarily neglects the mutual influences between plasma and solid surface and cannot have predictive power.In this paper we discuss in some detail the physical processes a the plasma-solid interface which brings us to the necessity of coupled plasma-solid simulations. We briefly summarize relevant theoretical methods from solid state and surface physics that are suitable to contribute to such an approach and identify four methods. The first are mesoscopic simulations such as kinetic Monte Carlo (KMC) and molecular dynamics (MD) that are able to treat complex processes on large scales but neglect electronic effects. The second are quantum kinetic methods based on the quantum Boltzmann equation that give access to a more accurate treatment of surface processes using simplifying models for the solid. The third approach are ab initio simulations of surface process that are based on density functional theory (DFT) and time-dependent DFT. The fourths are nonequilibrium Green functions that able to treat correlation effects in the material and at the interface. The price for the increased quality is a dramatic increase of computational effort and a restriction to short time and length scales. We conclude that, presently, none of the four methods is capable of providing a complete picture of the processes at the interface. Instead, each of them provides complementary information, and we discuss possible combinations. PACS numbers:

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First-principles particle simulation and Boltzmann equation analysis of negative differential conductivity and transient negative mobility effects in xenon

Cited by 30 publications

References 52 publications

The 2017 Plasma Roadmap: Low temperature plasma science and technology

The 2017 Plasma Roadmap: Low temperature plasma science and technology

Advances in positron and electron scattering*

Towards an integrated modeling of the plasma-solid interface

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