Development of a UHV-compatible Low-energy Electron Gun using the Photoelectric Effect Sawa, Hiroyoshi ; Anzai, Mao ; Konishi, Tatsuya ; Tachibana, Takayuki ; Hirayama, Takato Abstract Publication: Journal of the Vacuum Society of Japan Pub Date: 2017 DOI: 10.3131/jvsj2.60.467 Bibcode: 2017JVSJ...60..467S