Measurements of electron emission under electron impact on BN sample for incident electron energy between 10 eV and 1000 eV

Villemant, M.; Belhaj, Mohamed; Sarrailh, Pierre; Dadouch, S.; Garrigues, Laurent; Boniface, C.

doi:10.1209/0295-5075/127/23001

Cited by 3 publications

(2 citation statements)

References 26 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…All these experimental observations stimulated comprehensive theoretical and modeling studies aimed at the description of complex plasma processes in HETs as well as accurate measurements of secondary electron emission from dielectrics [15], [16], [17], [18]. It became clear that the theories have to be kinetic, as fluid theories cannot explain such high electron temperatures observed in HET due to fast losses to the channel walls, see Fig.…”

Section: Plasma Wall Interaction In E×b Discharges Relevant To Plasma...mentioning

confidence: 99%

Physics of E × B discharges relevant to plasma propulsion and similar technologies

et al. 2020

View full text Add to dashboard Cite

This paper provides perspectives on recent progress in the understanding of the physics of devices where the external magnetic field is applied perpendicularly to the discharge current. This configuration generates a strong electric field, which acts to accelerates ions. The many applications of this set up include generation of thrust for spacecraft propulsion and the separation of species in plasma mass separation devices. These "E×B" plasmas are subject to plasma-wall interaction effects as well as various micro and macro instabilities, and in many devices, we observe the emergence of anomalous transport. This perspective presents the current understanding of the physics of these phenomena, state-of-the-art computational results, identifies critical questions, and suggests directions for future research.

show abstract

Section: Plasma Wall Interaction In E×b Discharges Relevant To Plasma...mentioning

confidence: 99%

Physics of E × B discharges relevant to plasma propulsion and similar technologies

et al. 2020

View full text Add to dashboard Cite

show abstract

“…When an electron strikes the dielectric wall, the number of secondary electrons emitted is selected from the Vaughan formula [29].…”

Section: Plasma-wall Interactionmentioning

confidence: 99%

Coupling plasma physics and chemistry in the PIC model of electric propulsion: Application to an air-breathing, low-power Hall thruster

Taccogna

Cichocki²,

Minelli³

2022

Front. Phys.

View full text Add to dashboard Cite

This work represents a first attempt to include the complex variety of electron-molecule processes in a full kinetic particle-in-cell/test particle Monte Carlo model for the plasma and neutral gas phase in a Hall thruster. Particular emphasis has been placed on Earth’s atmosphere species for the air-breathing concept. The coupling between the plasma and the gas phase is self-consistently captured by assuming the cold gas approximation and considering gas-wall and gas recycling from the walls due to ion neutralization. The results showed that, with air molecular propellants, all the most relevant thruster performance figures degraded relative to the nominal case using Xe propellant. The main reasons can be ascribed to a reduced ionization cross-section, a larger gas ionization mean free path due to lighter mass air species, and additional electron collisional power losses. While vibrational excitations power losses are negligible, dissociation and electronic excitations compete with the ionization channel. In addition, for molecular oxygen, the large dissociation leads to even faster atoms, further reducing their transit time inside the discharge channel. Future studies are needed to investigate the role of non-equilibrium vibrational kinetics and metastable states for stepwise ionization.

show abstract

Plasma propulsion modeling with particle-based algorithms

Taccogna,

Cichocki,

Eremin

et al. 2023

Journal of Applied Physics

View full text Add to dashboard Cite

This Perspective paper deals with an overview of particle-in-cell/Monte Carlo collision models applied to different plasma-propulsion configurations and scenarios, from electrostatic (E×B and pulsed arc) devices to electromagnetic (RF inductive, helicon, electron cyclotron resonance) thrusters, as well as plasma plumes and their interaction with the satellite. The most important items related to the modeling of plasma–wall interaction are also presented. Finally, the paper reports new progress in the particle-in-cell computational methodology, in particular, regarding accelerating computational techniques for multi-dimensional simulations and plasma chemistry Monte Carlo modules for molecular and alternative propellants.

show abstract

Measurements of electron emission under electron impact on BN sample for incident electron energy between 10 eV and 1000 eV

Cited by 3 publications

References 26 publications

Physics of E × B discharges relevant to plasma propulsion and similar technologies

Physics of E × B discharges relevant to plasma propulsion and similar technologies

Coupling plasma physics and chemistry in the PIC model of electric propulsion: Application to an air-breathing, low-power Hall thruster

Plasma propulsion modeling with particle-based algorithms

Contact Info

Product

Resources

About