Patent ID: 7655930
Filing Date: 2010-02-02
Classification: H01J

Abstract:
1. Apparatus comprising: a) an arc chamber body having a chamber interior bound by chamber walls providing a confined region for generating ions from a source gas within the confined region and having an exit through which ions exit the arc chamber body; said arc chamber body including an access opening passing through a chamber wall of the chamber body for routing ionization energy from outside the arc chamber to the chamber interior; b) a cathode supported in relation to the chamber interior for injecting ionizing electrons into the confined region for ionizing gas in the chamber interior when energized by energization signals entering the chamber through the access opening; c) an electrically insulating seal comprising a ceramic body having an exterior wall that abuts an outer surface of the arc chamber body and circumferentially bounds the access opening which passes through the chamber wall for impeding material from exiting the chamber interior through the access opening of the arc chamber body.