Design of Achromatic Combined Quadrupole Lens Using the Modified Bell-Shaped Field Distribution Model. Iraqi Journal of Physics, [S. l.], v. 9, n. 16, p. 66–72, 2011. Disponível em: https://ijp.uobaghdad.edu.iq/index.php/physics/article/view/790.. Acesso em: 17 may. 2024.