This article provides information about the sizing and standardization of a Faraday cup (FC)
used as a plasma diagnostic. This instrument is used to accurately map the ion beam profile …

To better characterize the lifetime and performance of electrospray thrusters, electron
emission due to electrode impingement by the propellant cation 1-ethyl-3 …

Aluminum microfoams are found to exhibit persistent sputtering yield reductions of 40%–
80% compared to a flat aluminum surface under 100 to 300 eV argon plasma bombardment …

A novel method for the in situ visualization and profilometry of a plasma-facing surface is
demonstrated using a long-distance microscope. The technique provides valuable in situ …

Featured Application Over the last decade electric propulsion devices have evolved from
laboratory units to qualified space hardware. Due to the diversity of concepts numerous …

Recent research on high-gradient radio frequency (RF) accelerating structures indicates that
the use of hard copper alloys provides improvement in high gradient performance over …

The Joint AdvaNced PropUlsion InStitute (JANUS) is a NASA-funded endeavor to enable
and proliferate the flight of high-power electric propulsion (EP) systems. Successful …

A Monte Carlo model is developed and validated to understand the ion-induced electron
emission (IIEE) characteristics of complex surfaces and to show the importance of using …

Surface nanostructuring enables the fabrication of materials with highly desirable properties.
Nanostructured tungsten surfaces have potential applications in solar water splitting …

Measurement of electron energy spectra of dielectrics is a challenge due to charging issues.
This article presents experimental results of electron energy spectra of dielectric materials …