Resonant chamber applicator for remote plasma source

Coating apparatus – Gas or vapor deposition – With treating means

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118723MW, 156345, 31323131, C23C16/00

Patent

active

059024046

ABSTRACT:
A remote source of partially ionized plasma gas having ions and excited neutral atom species therein is provided. A chamber having a metallic outer shell and an inner insulative tube, is operated as a microwave resonant cavity, preferably having a diameter of about one quarter of the operating wavelength. A waveguide couples microwave energy from a source to a slot cut into the metallic outer shell of the cavity. Microwave energy passes through the inner energy transparent tube and excites reactant gases supplied from an input tube. Plasma is conducted from the cavity by a plasma output tube coupled into a processing chamber and controlled pressure pumping system.

REFERENCES:
patent: 4699689 (1987-10-01), Bersin
patent: 4988644 (1991-01-01), Jucha et al.
patent: 5262610 (1993-11-01), Huang et al.
patent: 5453125 (1995-09-01), Krogh
patent: 5747917 (1998-05-01), Hercher

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