News

Esgee to present at 71st GEC in Portland

October 30th, 2018 helical resonator plasma simulation

Esgee Technologies will be attending the 71st Annual Gaseous Electronics Conference in Portland, Oregon next week, November 5 – 9. Join Esgee Tech’s Rochan Upadhyay for his talk on “Computational Modeling and Simulation of a Resonant Plasma Source.” He’ll demonstrate how electrical resonance can be exploited to extend low temperature, unmagnetized plasma sources beyond their typical operating limits. Esgee also supported the work being presented by Tokyo Electron America’s Peter Ventzek. He will present “Parametric Modeling and […]


Kinetic PIC Modeling of Ion Beam Neutralization

October 4th, 2018 PIC beam neutralization

Ion beam neutralization is a significant challenge in electric propulsion and is needed to reduce beam electric fields, manage space charge, and reduce ion sputter of the spacecraft. To address these challenges, simulation can be used to investigate ion/electron interactions, predict space charge distributions, and optimize system properties, such as cathode location, beamlet current, ion density, and electron temperature. However, beam neutralization can be a challenging problem to simulate due to the extreme difference in […]


Esgee to Present at SCTC 2018: Modeling of Spacecraft Charging in GEO orbit

June 13th, 2018 Satellite charge-up simulation

Esgee will present “High-fidelity Multi-Length Scale Modeling of Spacecraft Charging in GEO orbit” at the 15th Spacecraft Charging Technology Symposium 25-29 June, 2018 at the Integrated Research Center of Kobe University in Japan.   Abstract This study describes high-fidelity modeling of spacecraft charging in GEO orbit environment and the resulting incipient vacuum arcing on the spacecraft’s surface. A satellite in GEO environment is subject to continuous bombardment by highly energetic charged particles that accumulate over time on dielectric […]


Esgee to Present at SCTC 2018: Hybrid Model of RF Gridded Ion Thruster

June 13th, 2018 Hybrid Plasma Ion Thruster Simulation

Esgee will present “Hybrid Fluid-Particle Plasma Modeling of a Radio-Frequency Gridded Ion” at the 15th Spacecraft Charging Technology Symposium 25-29 June, 2018 at the Integrated Research Center of Kobe University in Japan.   Abstract We present a hybrid, fluid-particle plasma model that is used to investigate the plasma discharge and ion extraction behaviors of a radio-frequency gridded ion thruster (RIT). The hybrid approach combines a fluid formulation for plasma governing equations with a kinetic particle formulation […]


Dust Particle Charge-up in a Corona Discharge

April 18th, 2018 dust-particle-chargeup-plasma-corona

This example demonstrates charge-up of initially charge-free dust particles as they move through a pin-corona plasma. Two sets of particles move through the corona with different initial velocities. The dust particles are subject to Lorentz forcing in the electric field and their resulting trajectories are compared. The macroscopic particle dynamics is modeled in VizGrain and coupled to a background plasma solution modeled in VizGlow. The 2D planar pin geometry and mesh is shown in Figure […]