Quasineutral limit of the Euler-Poisson system for ions in a domain with boundaries David Gerard-VaretDaniel Han-kwanF. Rousset 76N1576N2535Q35isothermal Euler-Poissonquasineutral limitboundary layersmodulated linearized energy We study the quasineutral limit of the isothermal Euler-Poisson system describing a plasma made of ions and massless electrons. The analysis is achieved in a domain of $\mathbb{R}^3$ and thus extends former results by Cordier and Grenier [\textit{Quasi\-neutral limit of an Euler-Poisson system arising from plasma physics}, Comm.\ Partial Differential Equations \textbf{25} (2000), no. 5--6, pp. 1099--1113], who dealt with the same problem in a one-dimensional domain without boundary. Indiana University Mathematics Journal 2013 text pdf 10.1512/iumj.2013.62.4900 10.1512/iumj.2013.62.4900 en Indiana Univ. Math. J. 62 (2013) 359 - 402 state-of-the-art mathematics http://iumj.org/access/