Patent ID: 8076650

Claim:
A method of charged particle beam processing, comprising: providing an ion beam system having a first gas supply and a second gas supply, the first and second gas supplies being selectively connected to the plasma chamber of an ion source for producing ions of a first type or ions of a second type, respectively, the ion beam system including focusing optics for forming a beam of ions extracted from the plasma chamber; selectively causing a gas from the first gas supply to enter the plasma chamber; and processing a work piece using a beam of ions of the first type extracted from the plasma chamber; selectively causing a gas from the second gas supply to enter the plasma chamber; processing the work piece using a beam of ions of the second type extracted from the plasma chamber, in which the work piece is not removed from the vacuum chamber and the vacuum chamber is not exposed to atmosphere between processing the work piece using the beam of ions of a first type and processing the work piece using the beam of ions of a second type.