2026-07-072026-07-07http://salesiana.dossiersoluciones.com/handle/123456789/36028A self-gravitating cylindrical domain wall is considered as an example of non-spherical wall to clarify the interaction between a domain wall and gravitational waves. We consider the time evolution from a momentarily static initial configuration within an infinitesimal time interval using the metric junction formalism. We found that the wall with a large initial radius radiates large amplitude of the gravitational waves and undergoes its large back reaction.3 pages, latex requires mprocl.sty, no figures. To appear in the proceedings of the Eighth Marcel Grossmann Conference on General Relativity (Jerusalem, Israel, June 1997)General Relativity and Quantum Cosmologytext