A5075164546- Plasma Diagnostics and Applications
- Electrohydrodynamics and Fluid Dynamics
- Plasma Applications and Diagnostics
- Magnetic confinement fusion research
- Particle accelerators and beam dynamics
- Electrostatic Discharge in Electronics
- Laser-induced spectroscopy and plasma
- Dust and Plasma Wave Phenomena
- Advanced Data Storage Technologies
- Semiconductor materials and devices
- Aerospace and Aviation Technology
- Aerodynamics and Fluid Dynamics Research
- Aerodynamics and Acoustics in Jet Flows
- Magnetic Field Sensors Techniques
- Vehicle Noise and Vibration Control
- Advanced Aircraft Design and Technologies
- Advancements in Semiconductor Devices and Circuit Design
- Aerosol Filtration and Electrostatic Precipitation
- Diamond and Carbon-based Materials Research
- Computational Fluid Dynamics and Aerodynamics
Princeton Plasma Physics Laboratory
2022-2024
Centre Européen de Recherche et de Formation Avancée en Calcul Scientifique
2019-2023
Safran (France)
2019-2023
Princeton University
2023
Safran (United Kingdom)
2021
Pennsylvania State University
2016
The increasing need to demonstrate the correctness of computer simulations has highlighted importance benchmarks. We define in this paper a representative simulation case study low-temperature partially-magnetized plasmas. Seven independently developed particle-in-cell codes have simulated benchmark case, with same specified conditions. characteristics used, such as implementation details or computing times and resources, are given. First, we compare at steady-state time-averaged axial...
In this paper we propose a representative simulation test-case of E × B discharges accounting for plasma wall interactions with the presence both electron cyclotron drift instability and modified-two-stream-instability. Seven independently developed particle-in-cell (PIC) codes have simulated benchmark case, same specified conditions. The characteristics different computing times are given. Results show that instabilities were captured in similar fashion good agreement between PIC is...
The process of numerical thermalization in particle-in-cell (PIC) simulations has been studied extensively. It is analogous to Coulomb collisions real plasmas, causing particle velocity distributions (VDFs) evolve toward a Maxwellian as macroparticles experience polarization drag and resonantly interact with the fluctuation spectrum. This paper presents practical tutorial on effects 2D PIC applications. Scenarios interest include simulations, which must be run for many thousands plasma...
In a Hall Thruster, the E×B current generates strong electron drift with respect to ions, which can trigger plasma instabilities, such as instability (EDI), also called cyclotron instability. The EDI has drawn great deal of attention in community previous one- and two-dimensional Particle-In-Cell (PIC) studies suggest it plays major role anomalous transport electrons across magnetic barrier. However, experiments showed that an inherent three-dimensional nature, cannot be accurately described...
Abstract Plasmas generated using energetic electron beams are well known for their low temperature ( T e ) and plasma potential, which makes them attractive atomic-precision processing applications such as atomic layer etch deposition. A 2-dimensional particle-in-cell model an beam-generated in argon confined by a constant applied magnetic field is described this article. Plasma production primarily occurs the path of beam electrons center chamber. The resulting spreads out chamber through...
Hollow cathodes for plasma switch applications are investigated via 2D3V particle-in-cell simulations of the channel and plume region. The kinetic nature within is dependent on thermalization rate electrons, emitted from insert. When Coulomb collisions occur at a much greater than ionization or excitation collisions, electron energy distribution function rapidly relaxes to Maxwellian can be described accurately fluid model. In contrast, if inelastic processes faster then in exhibits notable...
Occurrence of unintended gas breakdown in the narrow gaps plasma processing chambers is one critical challenges developing advanced sources. We present a combined experimental and theoretical study discharges report significant drop voltage presence background facing gap. Experimentally measured voltages decrease subsequent events due to wall erosion caused by discharge. Therefore, preventing mitigating first discharge paramount importance. An analysis kinetic simulation results indicates...
This study presents the integration of a flight simulation code (PSUHeloSim), high fidelity rotor aeromechanics model with free wake (CHARM Rotor Module), and an industry standard noise prediction tool (PSU-WOPWOP) into comprehensive system. The uses autonomous controller to follow prescribed trajectory for both steady maneuvering conditions. aeromechanical calculates blade loads motion that couple vehicle dynamics suitable resolution allow acoustics analysis (including blade-vortex...
The process of numerical thermalization in particle-in-cell (PIC) simulations has been studied extensively. It is analogous to Coulomb collisions real plasmas, causing particle velocity distributions (VDFs) evolve towards a Maxwellian as macroparticles experience polarization drag and resonantly interact with the fluctuation spectrum. This paper presents practical tutorial on effects 2D PIC applications. Scenarios interest include which must be run for many thousands plasma periods contain...
In this study, we conduct 2D3V Particle-In-Cell simulations of hollow cathodes, encompassing both the channel and plume region, with an emphasis on plasma switch applications. The in cathode can exhibit kinetic effects depending how fast electrons emitted from insert are thermalized via Coulomb collisions. criterion that determines whether operates a Duid or regime is given as follows. When collisions occur at much greater rate than ionization excitation events, Electron Energy Distribution...
A parametric study is conducted to quantify the effect of keeper electrode geometry on neutral flow quantities within orificed hollow cathodes, prior cathode ignition. The impinges directly out orifice and its strongly influences product between pressure in orifice-keeper region distance keeper, $P_{ko}\cdot D_{ko}$, a key parameter for successful representative equipped with simulated using Direct Simulation Monte Carlo method. numerical model first validated computational results from...