2026-07-072026-07-07http://salesiana.dossiersoluciones.com/handle/123456789/165956We develop a method for investigating the relationship between the shape of a 1-particle distribution and non-linear electrostatic oscillations in a collisionless plasma, incorporating transverse thermal motion. A general expression is found for the maximum sustainable electric field, and is evaluated for a particular highly anisotropic distribution.10 pagesPlasma Physicstext