Speaker
Zachary Liptak
(Hiroshima University)
Description
GaAs cathodes are unique devices which generate a spin-polarized electron beam by the photoelectric effect when illuminated with a circularly polarized laser. Thin-film Negative Electron Affinity (NEA) surfaces have an essential role in spin polarized beam production, but they have limited lifetimes. In this study, we activate GaAs as an NEA cathode by evaporating Cs, K, and Sb metal on its cleaned surface. Here we present the latest experimental results of quantum efficiency measurements taken after evaporative deposition of multi-alkali thin-film surfaces.
Funding Agency
The Japanese Ministry of Education, Culture, Sports, Science and Technology
The Cooperative Support for Researchers and Educators in Universities Program
at KEK
| Region represented | Asia |
|---|---|
| Paper preparation format | LaTeX |
Primary author
Zachary Liptak
(Hiroshima University)
Co-authors
Mr
Lei Guo
(Nagoya University)
Masao Kuriki
(Hiroshima University)
Naoto Yamamoto
(High Energy Accelerator Research Organization)
Xiuguang Jin
(High Energy Accelerator Research Organization)
