Immersed electrostatic lens design Tripolar. Journal of the College of Basic Education, [S. l.], v. 19, n. 80, p. 129–137, 2022. DOI: 10.35950/cbej.v19i80.7894. Disponível em: https://cbej.uomustansiriyah.edu.iq/index.php/cbej/article/view/7894.. Acesso em: 21 jul. 2024.