This paper reviews the requirements and current status of cathodes for accelerator
applications, and proposes a research and development plan for advancing cathode …

A compact introduction to the history and the canonical equations of electron emission is
given for thermal emission (Richardson), field emission (Fowler-Nordheim), photoemission …

A practical, in-depth description of the physics behind electron emission physics and its
usage in science and technology Electron emission is both a fundamental phenomenon and …

Photocathodes—materials that convert photons into electrons through a phenomenon
known as the photoelectric effect—are important for many modern technologies that rely on …

Linear-accelerator-based applications like x-ray free electron lasers, ultrafast electron
diffraction, electron beam cooling, and energy recovery linacs use photoemission-based …

In view of their exciting optoelectronic light–matter interaction properties, plasmonic–hot-
electron devices have attracted significant attention during the last few years as a novel …

Over the years, the generation and acceleration of ultra-short, high quality electron beams
has attracted more and more interest in accelerator science. Electron bunches with these …

Electron photoinjectors provide high-brightness electron beams to numerous research
applications in physics, chemistry, material, and life sciences. Semiconductor photocathodes …

In the last decade, the development of ultrafast electron diffraction (UED) and microscopy
(UEM) have enabled the imaging of atomic motion in real time and space. These pivotal …

NEA GaN-based photocathode has important application prospects in the vacuum electron
source and ultraviolet detection due to its direct wide bandgap, high quantum efficiency, and …