Experiments have proven that surface contaminants on the cathode of an electron beam diode influence electron emission current and impedance collapse. This letter reports on an investigation to reduce parasitic cathode current loss and to increase high voltage hold off capabilities by reactive sputter cleaning of contaminants. Experiments have characterized effective radio frequency (rf) plasma processing protocols for high voltage anode–cathode (A–K) gaps using a two-stage argon/oxygen and argon rf plasma discharge. Time-resolved optical emission spectroscopy measures contaminant (hydrogen) and bulk cathode (aluminum) plasma emission versus transported axial electron beam current turn on. Experiments were performed at accelerator parameter...
The present communication shows the possibility of observing microdischarges under cathodic polariza...
The time-evolution of a low aspect ratio, microsecond pulse length, electron beam diode with anode p...
A dense plasma structure was observed to form near the extraction aperture of a helium RF plasma cat...
Experiments have proven that both the surface contaminants and microstructure topography on the cath...
High-energy pulsed-power devices routinely access field strengths above those at which broad-area, c...
This work describes the experimental set up used for carrying out spectroscopic measurements in a pl...
This work presents the design, development and experimental results obtained from an RF plasma cath...
This research consisted of testing surface treatment processes for stainless steel and aluminum for ...
Field emission is the main mechanism that prevents DC high voltage photoemission electron guns from ...
A plasma cathode electron beam (EB) gun is presented in this work. A radio frequency (RF) excited pl...
Results are reported demonstrating that radio-frequency (rf) plasma cleaning is an effective techniq...
High-energy pulsed-power devices routinely access field strengths above those at which broad-area, c...
The temporal behavior of high-power diodes is closely related to the impedance collapse caused by th...
We describe measurements, modeling, and mitigation experiments on the effects of anode and cathode p...
Includes bibliographical references (page 374).We report the generation of high-current-density (20A...
The present communication shows the possibility of observing microdischarges under cathodic polariza...
The time-evolution of a low aspect ratio, microsecond pulse length, electron beam diode with anode p...
A dense plasma structure was observed to form near the extraction aperture of a helium RF plasma cat...
Experiments have proven that both the surface contaminants and microstructure topography on the cath...
High-energy pulsed-power devices routinely access field strengths above those at which broad-area, c...
This work describes the experimental set up used for carrying out spectroscopic measurements in a pl...
This work presents the design, development and experimental results obtained from an RF plasma cath...
This research consisted of testing surface treatment processes for stainless steel and aluminum for ...
Field emission is the main mechanism that prevents DC high voltage photoemission electron guns from ...
A plasma cathode electron beam (EB) gun is presented in this work. A radio frequency (RF) excited pl...
Results are reported demonstrating that radio-frequency (rf) plasma cleaning is an effective techniq...
High-energy pulsed-power devices routinely access field strengths above those at which broad-area, c...
The temporal behavior of high-power diodes is closely related to the impedance collapse caused by th...
We describe measurements, modeling, and mitigation experiments on the effects of anode and cathode p...
Includes bibliographical references (page 374).We report the generation of high-current-density (20A...
The present communication shows the possibility of observing microdischarges under cathodic polariza...
The time-evolution of a low aspect ratio, microsecond pulse length, electron beam diode with anode p...
A dense plasma structure was observed to form near the extraction aperture of a helium RF plasma cat...