A low-energy MHz repetition rate short-pulse electron gun
Source abstract
Abstract
An electron gun that can produce MHz repetition rates and nanosecond pulses is described. The gun uses a Pierce grid in combination with an anode to extract electrons from a tungsten filament cathode. The electrons emerging from the anode are accelerated and focused using two triple-aperture lenses to form a beam. By applying a high slew rate grid pulse that transitions through the extraction voltage region of the grid/anode combination, pulses of electrons are produced from the gun that have temporal widths less than 5 ns. The pulsed beams are produced at both the rising and falling edges of the driving pulse. The characteristics of the emerging electron beams have been determined using an (e, 2e) coincidence spectrometer, and examples where they are used for time of flight decay measurements are presented.
Source: crossref · Quality: baseline
Research context
OpenAlex topics: Plasma Diagnostics and Applications · Laser-induced spectroscopy and plasma · Atomic and Molecular Physics
SciVX discovery tags are terminology-based. OpenAlex topics are source-provided classifications.
Affiliations
Photon Science Institute, Department of Physics and Astronomy, Faculty of Science and Engineering, University of Manchester , Manchester M13 9PL, United Kingdom
Funding
Engineering and Physical Sciences Research Council
References (50)
Show source-provided references
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