Advances in bright electron sources
In this paper, we review the status of bright electron sources. High peak current (up to kA)
low emittance (< 1 mm rad) electron beams have been one of the critical components in the …
low emittance (< 1 mm rad) electron beams have been one of the critical components in the …
Single-crystal alkali antimonide photocathodes: High efficiency in the ultrathin limit
The properties of photoemission electron sources determine the ultimate performance of a
wide class of electron accelerators and photon detectors. To date, all high-efficiency visible …
wide class of electron accelerators and photon detectors. To date, all high-efficiency visible …
Electronic structure of cesium-based photocathode materials from density functional theory: performance of PBE, SCAN, and HSE06 functionals
The development of novel materials for vacuum electron sources in particle accelerators is
an active field of research that can greatly benefit from the results of ab initio calculations for …
an active field of research that can greatly benefit from the results of ab initio calculations for …
[HTML][HTML] Growth of ultra-flat ultra-thin alkali antimonide photocathode films
Ultra-flat, ultra-thin alkali antimonide photocathodes with high crystallinity can exhibit high
quantum efficiency and low mean transverse energy of outgoing electrons, which are …
quantum efficiency and low mean transverse energy of outgoing electrons, which are …
[HTML][HTML] Direct measurement of photocathode time response in a high-brightness photoinjector
G Loisch, Y Chen, C Koschitzki, H Qian… - Applied Physics …, 2022 - pubs.aip.org
Electron photoinjectors provide high-brightness electron beams to numerous research
applications in physics, chemistry, material, and life sciences. Semiconductor photocathodes …
applications in physics, chemistry, material, and life sciences. Semiconductor photocathodes …
Optical-Resonance-Enhanced Photoemission from Nanostructured Photocathodes
X Peng, Z Wang, Y Liu, DM Manos, M Poelker… - Physical Review …, 2019 - APS
A negative electron affinity photocathode based on Ga As nanopillar-array (NPA) Mie-type
resonators is demonstrated and significant quantum efficiency enhancement is observed …
resonators is demonstrated and significant quantum efficiency enhancement is observed …
Electron-emission materials: Advances, applications, and models
Electron emission represents the key mechanism enabling the development of devices that
have revolutionized modern science and technology. Today, science still relies on advanced …
have revolutionized modern science and technology. Today, science still relies on advanced …
High quantum efficiency ultrananocrystalline diamond photocathode for photoinjector applications
We report results of quantum efficiency (QE) measurements carried out on a 150 nm thick
nitrogen-incorporated ultrananocrystalline diamond terminated with hydrogen; abbreviated …
nitrogen-incorporated ultrananocrystalline diamond terminated with hydrogen; abbreviated …
Harnessing Plasmonic Interference for Nanoscale Ultrafast Electron Sources
In this Letter we demonstrate the use of plasmonic focusing in conjunction with nonlinear
photoemission to develop geometrically flat nanoscale electron sources with less than 40 …
photoemission to develop geometrically flat nanoscale electron sources with less than 40 …
Novel Ultrabright and Air‐Stable Photocathodes Discovered from Machine Learning and Density Functional Theory Driven Screening
The high brightness, low emittance electron beams achieved in modern X‐ray free‐electron
lasers (XFELs) have enabled powerful X‐ray imaging tools, allowing molecular systems to …
lasers (XFELs) have enabled powerful X‐ray imaging tools, allowing molecular systems to …