Patent ID: 7217337

Claim:
A plasma process chamber, comprising: an upper housing providing a first chamber including a gas inlet connected to a gas source, and a gas shower head placed in said upper housing within said first chamber; a lower housing providing a second chamber including a gas outlet connected to a vacuum pump, and a substrate provided on the inner bottom of said lower housing, a wafer being placed on said substrate; and a plasma reactor provided between said upper housing and said lower housing, said plasma reactor including a main body between said upper housing and said lower housing, and at least one reactor tube of horseshoe shape, said reactor tube of horseshoe shape being attached entirely on the outer circumference of said main body between said upper housing and said lower housing, a closed magnetic core attached to said reactor tube, and a coil wound on said magnetic core, said coil being connected electrically to an alternating current power source via an impedance matching unit, said reactor tube being made of a metal, and an insulator being provided between said main body and said reactor tube and said insulator being directly adjacent to said main body and reactor tube, and said first chamber, second chamber and main body being separate from each other.