Patent ID: 6096160
Filing Date: 2000-08-01
Classification: C23F,H01J,H01L

Abstract:
A plasma apparatus, comprising:a vacuum vessel for accommodating a substrate therein, said vacuum vessel having a wall,a portion of said wall of said vacuum vessel being formed of an electrically non-conductive material,a high-frequency antenna placed around the portion of the wall of the vacuum vessel formed of the electrically non-conductive material,magnetic field generating means place on an outer periphery of said high-frequency antenna for generating a magnetic field,magnetic field control means for switching between generation and extinction of the magnetic field by said magnetic field generating means so as to switch between a helicon wave plasma and an inductively coupled plasma in said vacuum vessel,high-frequency electrical field control means for high-speed switching between supply and interruption of a high-frequency current to said high-frequency antenna, andmeans for generating a helicon-wave plasma within said vacuum vessel.