Nous étudions la limite quasineutre d'un système de Vlasov-Poisson qui décrit la dynamique d'ions dans un plasma. Nous travaillons avec des données à régularité Sobolev sous l'hypothèse optimale que les profils en vitesse des données initiales satisfont une condition de stabilité de Penrose.
Comme corollaire de notre analyse, nous obtenons une théorie d'existence et d'unicité pour l'équation limite (qui est une équation de Vlasov avec une mesure de Dirac pour noyau d'interaction), pour de telles données.
We study the quasineutral limit of a Vlasov-Poisson system that describes the dynamics of ions in a plasma. We handle data with Sobolev regularity under the sharp assumption that the profiles in velocity of the initial data satisfy a Penrose stability condition.
As a byproduct of our analysis, we obtain a well-posedness theory for the limit equation (which is a Vlasov equation with Dirac measure as interaction kernel), for such data.
DOI : 10.24033/asens.2313
Keywords: Vlasov-Poisson, quasineutral limit, Penrose stability condition.
Mot clés : Vlasov-Poisson, limite quasi neutre, condition de stabilité de Penrose.
@article{ASENS_2016__49_6_1445_0, author = {Han-Kwan, Daniel and Rousset, Fr\'ed\'eric}, title = {Quasineutral limit for {Vlasov-Poisson} with {Penrose} stable data}, journal = {Annales scientifiques de l'\'Ecole Normale Sup\'erieure}, pages = {1445--1495}, publisher = {Soci\'et\'e Math\'ematique de France. Tous droits r\'eserv\'es}, volume = {Ser. 4, 49}, number = {6}, year = {2016}, doi = {10.24033/asens.2313}, mrnumber = {3592362}, language = {en}, url = {http://www.numdam.org/articles/10.24033/asens.2313/} }
TY - JOUR AU - Han-Kwan, Daniel AU - Rousset, Frédéric TI - Quasineutral limit for Vlasov-Poisson with Penrose stable data JO - Annales scientifiques de l'École Normale Supérieure PY - 2016 SP - 1445 EP - 1495 VL - 49 IS - 6 PB - Société Mathématique de France. Tous droits réservés UR - http://www.numdam.org/articles/10.24033/asens.2313/ DO - 10.24033/asens.2313 LA - en ID - ASENS_2016__49_6_1445_0 ER -
%0 Journal Article %A Han-Kwan, Daniel %A Rousset, Frédéric %T Quasineutral limit for Vlasov-Poisson with Penrose stable data %J Annales scientifiques de l'École Normale Supérieure %D 2016 %P 1445-1495 %V 49 %N 6 %I Société Mathématique de France. Tous droits réservés %U http://www.numdam.org/articles/10.24033/asens.2313/ %R 10.24033/asens.2313 %G en %F ASENS_2016__49_6_1445_0
Han-Kwan, Daniel; Rousset, Frédéric. Quasineutral limit for Vlasov-Poisson with Penrose stable data. Annales scientifiques de l'École Normale Supérieure, Série 4, Tome 49 (2016) no. 6, pp. 1445-1495. doi : 10.24033/asens.2313. http://www.numdam.org/articles/10.24033/asens.2313/
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