[16a-S4_203-1~12] 7.2 Applications and technologies of electron beams

10:00 AM - 10:15 AM JST(1:00 AM - 1:15 AM UTC)

[16a-S4_203-5] Development of an electron gun using a transmission type LaB₆ thin film photocathode Ⅱ

〇(M1)Sota Doke¹, Takafumi Ishida^1,2, Koh Saitoh^1,2 (1.Grad. Sch. of Eng., Nagoya Univ., 2.IMaSS, Nagoya Univ.)

Keywords:

electron microscope,photocathode

By employing a photocathode electron gun, ultrafast phenomena can be visualized using electron microscopy. To improve the performance of photocathode electron guns, we focused on the metallic compound LaB₆, which has a long lifetime and a low work function, and fabricated thin films using pulsed laser deposition (PLD). In this study, deposition conditions were investigated, and the surface morphology and crystal structure of the films were evaluated by scanning electron microscopy (SEM) and scanning transmission electron microscopy (STEM). As a result, we confirmed that lowering the laser intensity suppresses droplet formation.