Thermodynamic and Transport Properties of Equilibrium Debye Plasmas

Colonna, G.; Laricchiuta, Annarita

doi:10.3390/e22020237

Cited by 4 publications

(1 citation statement)

References 50 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Moreover, the plasma modifies also the electrostatic interaction at atomic length scale and the charge interaction is ruled by the screened Coulomb (or Yukawa) potential [65], modifying the level energy and the effective number of bounded levels [66]. This aspect is important not only for the determination of the thermodynamic and transport properties of dense plasmas [67,68], but also for their chemical properties, such as the rate coefficients depend on the population distribution of the excited states, which could be far from equilibrium.…”

Section: Nitrogen Seeding Experiments In Laboratory: Formation Of Nitrides and Ammonia By Plasma Wall Interaction In Gym Linear Devicementioning

confidence: 99%

Theoretical and experimental aspects of non-equilibrium plasmas in different regimes: fundamentals and selected applications

et al. 2021

Self Cite

View full text Add to dashboard Cite

This paper presents recent activities covering different plasma fields, from both theoretical and experimental point of views. An overview of the present interests of the scientific community is reported here. Starting from a brief description of the role of collisions in astrophysical plasmas, some fundamental aspects of gas discharges modelling, such as superelastic collisions and the basic concept of vibrational temperature, are discussed. Different plasma sources, as DBD and microwave discharges with their own specific applications, are reported. Edge plasmas in nuclear fusion reactors are investigated, focusing on the cooling mechanisms resulting from nitrogen puffing in the divertor region.

show abstract

Section: Nitrogen Seeding Experiments In Laboratory: Formation Of Nitrides and Ammonia By Plasma Wall Interaction In Gym Linear Devicementioning

confidence: 99%

Theoretical and experimental aspects of non-equilibrium plasmas in different regimes: fundamentals and selected applications

et al. 2021

Self Cite

View full text Add to dashboard Cite

show abstract

Shannon entropy for hydrogen atom in Debye and quantum plasma environment

Verma

Joshi

2023

Physics of Plasmas

View full text Add to dashboard Cite

The plasma screening effect on Shannon entropy values is studied for atomic states of hydrogen under the more general exponential cosine screened Coulomb (MGECSC) potential, which can be used to model Debye and quantum plasmas. The wavefunctions used in the calculation of Shannon entropy are obtained by solving the Schrödinger equation employing the efficient Numerov technique. Shannon entropy is calculated for hydrogen atom quantum levels using various sets of screening parameters to account for the four different potential forms present in the MGECSC potential. The electron density distributions are considerably altered due to the plasma shielding influence on the embedded hydrogen atoms, and this effect is measured by the shift in Shannon entropy. A greater screening influence on entropy is observed in quantum plasma modeled by the MGECSC potential than that in Debye plasma due to the significant combined effects of screening parameters. Excellent convergence is obtained on comparing our results for plasma-free hydrogen atom with the currently available literature. This study is the first to examine the effects of shielding on Shannon entropy of hydrogen atoms in plasmas modeled by the MGECSC potential. These findings will be important for theoretical and experimental research in the disciplines of atomic physics and plasma diagnostics.

show abstract

Non-equilibrium phenomena in thermal plasmas

Cressault

Teulet

Baumann

et al. 2020

Plasma Res. Express

View full text Add to dashboard Cite

This tutorial is intended to provide a basic overview of non-equilibrium phenomena for thermal plasmas. Thermal plasmas (TPs) mainly issued from electrical discharges are often assumed to be in ≪ equilibrium ≫ as opposed to ≪ non-equilibrium plasmas ≫ where non-equilibrium phenomena are more pronounced. As a first approximation it can be shown that TPs are close to a local thermodynamic equilibrium (LTE) which is often taken as their reference state. However, in many situations, deviations from LTE can clearly exist. The main goal of this brief tutorial is to explain to interested scientists the main phenomena, mechanisms and characteristics associated to TPs or quasi-TPs. Then we introduce the different laws of the thermodynamic equilibrium applied to these plasmas and show that not all of them are valid in TPs, which lead us to define the LTE. However, even if the transport phenomena are non-equilibrium mechanisms, we show with illustrations that they are studied and estimated within the framework of the LTE. The next sections focus on phenomena named ‘departures from equilibrium’ for thermal plasmas. For convenience and educational reasons, we split them into the departures from the chemical and the thermal equilibria respectively. In each case we present and clearly define the mechanisms that promote equilibrium and those that tend to create departures. We present not only experimental setups that highlight these deviations but also the basis for the mathematical models that allow them to be simulated, before concluding the tutorial with the outlooks and challenges currently under research.

show abstract

Thermodynamic and Transport Properties of Equilibrium Debye Plasmas

Cited by 4 publications

References 50 publications

Theoretical and experimental aspects of non-equilibrium plasmas in different regimes: fundamentals and selected applications

Theoretical and experimental aspects of non-equilibrium plasmas in different regimes: fundamentals and selected applications

Shannon entropy for hydrogen atom in Debye and quantum plasma environment

Non-equilibrium phenomena in thermal plasmas

Contact Info

Product

Resources

About