28 citations · 66 across the 6 of their papers we have counts for
6 papers
Experimental characterization of thermionic surface cooling in thermionic discharge
Junhwi Bak, Albina Tropina, James Creel +1
In this work, the thermionic cooling effect during thermionic discharges with parallel plate electrodes at 1 Torr is investigated. Time-resolved observation of electron emission an…
High resolution spatially extended 1D laser scattering diagnostics using volume Bragg grating notch filters
Junhwi Bak, Jean Luis Suazo Betancourt, Anuj Rekhy +4
Laser light scattering systems with volume Bragg grating (VBG) filters, which act as a spectral/angular filter, have often been used as a point measurement technique with spatial r…
A dual color, frequency, pulse duration and shape agile laser system for particle spectroscopy and manipulation
Junhwi Bak, Robert Randolph, Alexandros Gerakis
A dual color, frequency and pulse duration agile laser system, capable of delivering laser pulses in arbitrary temporal profiles with ~1 ns to ~1 us pulse duration, chirping rates…
Evolution of electron cross-field transport induced by an equilibrium azimuthal electric field in an Hall thruster discharge under an azimuthally inhomogeneous neutral supply
Junhwi Bak, Rei Kawashima, Jacob Simmonds +1
The electron cross-field transport by the induced azimuthal electric field in a Hall thruster exhibits the mobility scaled by . This study investigates parameters affecting th…
Two-dimensional Modeling of the Hall Thruster Discharge with Non-uniform Propellant Supply in Azimuth
Rei Kawashima, Junhwi Bak, Kimiya Komurasaki +1
A two-dimensional simulation is conducted to investigate the effect of cross-field electron transport enhancement in the Hall thruster discharge caused by the nonuniform propellant…
Particle Simulation of Plasma Drag Force Generation in the Magnetic Plasma Deorbit
Rei Kawashima, Junhwi Bak, Shinji Matsuzawa +1
The magnetic plasma deorbit method has been proposed for micro and nanosatellites in the low earth orbit (LEO). The magnetic plasma deorbit utilizes the plasma drag force generated…