HUSSEIN, Bushra H. Space Charge Effect for Design Electron Gun Using Five Electrode Immersion Electrostatic Lenses. Ibn AL-Haitham Journal For Pure and Applied Sciences, Baghdad, Iraq., v. 26, n. 1, p. 144–152, 2017. Disponível em: https://jih.uobaghdad.edu.iq/index.php/j/article/view/514.. Acesso em: 22 nov. 2024.