An Improved Ghost-Point Technique for the Electrostatic Equation with Curved Boundaries and Discontinuous Permittivity in ECR Ion Source PIC Simulations. Communications in Computational Physics, [S. l.], v. 39, n. 3, p. 713–746, 2026. DOI: 10.4208/cicp.OA-2025-0100. Disponível em: https://global-sci.com/index.php/cicp/article/view/23488. Acesso em: 26 feb. 2026.