Patent ID: 6027662
Filing Date: 2000-02-22
Classification: C23C,H01J,H01L

Abstract:
An apparatus for generating a medium having a composition and including a plurality of constituents, for treating a substrate, the apparatus comprising:a. a first chamber;b. a substrate support, housed in the first chamber;c. at least one auxiliary chamber;d. a gas distribution system coupled to the first and the at least one auxiliary chamber for conveying gaseous species into the first chamber at a first gas composition and into the at least one auxiliary chamber at a respective gas composition;e. a source of electromagnetic excitation, coupled to each of the first and the at least one auxiliary chamber so as to impart energy to gaseous species contained therein and thereby effect generation of a first constituent, having a composition, in the first chamber at a first pressure and a first temperature and generation of a respective constituent, having a composition, in the at least one auxiliary chamber at a respective pressure and temperature;f. a mass transfer system for conveying the respective constituent generated in the at least one auxiliary chamber into the first chamber for blending with the first constituent so as to produce the medium; andg. means for monitoring the composition of at least one of(i.) the medium and(ii.) at least one of the constituents.