Kinetic-theory-based investigation of electronegative plasma–wall transition with two populations of electrons

Basnet, Suresh; Deuja, Atit; Khanal, Raju

doi:10.1088/2058-6272/abde1d

Cited by 3 publications

(2 citation statements)

References 39 publications

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“…As the concentration of negative ion increases, the magnitude of electric field decreases from about 2.5 electron Debye lengths from the wall. In the present work, we have considered the positive and negative ions can reach sheath boundary with individual sound speed, which may lead to the obtained results is qualitatively different from the previous work (Basnet, Deuja & Khanal 2021).…”

Section: Effect Of Concentration Of Negative Ions On Plasma Sheathmentioning

confidence: 58%

“…The compiled kinetic equations have been solved for the given boundary conditions and the details of simulation method were presented in the previous work (Chalise & Khanal 2012, 2015, Basnet, Deuja & Khanal 2021. The physical input parameters considered in the present work are: magnetic field B (0, 100 mT and 250 mT), obliqueness of magnetic field θ = 45 0 , T…”

Section: Resultsmentioning

confidence: 99%

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Effect of Negative Ion Concentration and Magnetic Field on Electronegative Plasma Sheath

Chalise¹,

Nepali

Thakur

et al. 2021

Tribhuvan University Journal

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Plasma is the ionized state of matter and is of interest as it has found applications in diverse fields. In all practical applications of plasma, it interacts with the material surface via non-neutral region that is formed between bulk plasma and surface known as the sheath, which plays a vital role in overall plasma properties. In this work, the characteristics of electronegative magnetized plasma sheath have been presented employing the kinetic trajectory simulation method based on kinetic theory. It is found that magnetic field and volumetric composition of negatively charged particles have significantly affected the characteristics of electronegative plasma sheath. Although the particle densities deplete towards the wall, the decreasing rate of negative charged particles is steeper than that of positive ions. The magnitude of electric field slowly increases close to the sheath entrance, whereas it sharply increases close to the wall. The positive ion density decreases in both cases when the concentration of negative ion is increased or when the magnetic field is increased. On increasing the magnetic field from 0 to 250 mT, the ion density reaching the wall decreases from 0.331 to 0.305 n ps. The results are similar and agree with similar works following different models and our model provides a satisfactory basis for the study of electronegative plasma sheath.

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Section: Effect Of Concentration Of Negative Ions On Plasma Sheathmentioning

confidence: 58%

Section: Resultsmentioning

confidence: 99%

Effect of Negative Ion Concentration and Magnetic Field on Electronegative Plasma Sheath

Chalise¹,

Nepali

Thakur

et al. 2021

Tribhuvan University Journal

Self Cite

View full text Add to dashboard Cite

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Comprehensive study of Kinetic Trajectory Simulation method for multi-component magnetized plasma-wall interaction process

Basnet,

Chalise,

Acharya

et al. 2024

Fundamental Plasma Physics

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Effect of negatively biased electrode on two ion species plasma–wall transition, ion drag force, and levitation of dust particle

et al. 2022

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The effect of negatively biased electrodes on two ion species (argon and xenon) magnetized plasma–wall transition characteristics and the levitation of an isolated dust particle in the sheath region has been investigated using the kinetic trajectory simulation method based on a kinetic theory. It is found that the electrode biasing affects the transition parameters: space charge density, sheath potential, evolution of phase-space, and particle flux toward the electrode. The scale length of the Debye sheath region becomes widened for the increase in negative biasing and the presence of magnetic field as well. The biasing voltage and size of the dust particle have significant effect on the evolution of the dust charge, ion drag force, and levitation of a charged dust grain in the transition region. The dust particle is negatively charged at the particle injection side, and it acquires a positive charge for higher biasing voltage close to the electrode owing to electron depletion in that region. The distance of stable levitation from the electrode increases with the increase in the negative voltage applied to the electrode. Furthermore, the volumetric composition of two species of positive ions influence the dust charging process with the negative charge of the dust particle increasing as the concentration of xenon ions increases.

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Kinetic-theory-based investigation of electronegative plasma–wall transition with two populations of electrons

Cited by 3 publications

References 39 publications

Effect of Negative Ion Concentration and Magnetic Field on Electronegative Plasma Sheath

Effect of Negative Ion Concentration and Magnetic Field on Electronegative Plasma Sheath

Comprehensive study of Kinetic Trajectory Simulation method for multi-component magnetized plasma-wall interaction process

Effect of negatively biased electrode on two ion species plasma–wall transition, ion drag force, and levitation of dust particle

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