5 papers · 1 filter
Capturing Secondary Kinetic Instabilities in Three-Dimensional Dayside Reconnection Using an Improved Gradient-Based Closure
Kolter Bradshaw, Ammar Hakim, James Juno +3
Magnetic reconnection is a highly dynamic process that excites a wide variety of kinetic waves and instabilities. Transverse current sheet instabilities such as the lower-hybrid dr…
General kinetic ion induced electron emission model for metallic walls applied to biased Z-pinch electrodes
Chirag R. Skolar, Kolter Bradshaw, Manaure Francisquez +3
A kinetic ion induced electron emission (IIEE) model for general applications is developed to obtain the emitted electron energy spectrum for a distribution of ion impacts on a met…
Effects of oxidation and impurities in lithium surfaces on the emitting wall plasma sheath
Kolter Bradshaw, Ammar Hakim, Bhuvana Srinivasan
Use of lithium as a surface coating in fusion devices improves plasma performance, but the change in wall properties affects the secondary electron emission properties of the mater…
Energy-dependent implementation of secondary electron emission models in continuum kinetic sheath simulations
Kolter Bradshaw, Bhuvana Srinivasan
The plasma-material interactions present in multiple fusion and propulsion concepts between the flow of plasma through a channel and a material wall drive the emission of secondary…
Plasma sheath studies using a physical treatment of electron emission from a dielectric wall
Kolter Bradshaw, Petr Cagas, Ammar Hakim +1
When a plasma sheath forms next to a dielectric wall, material properties determine electron absorption and reflection from the surface, impacting the sheath formation and structur…