Patent ID: 7999479

Claim:
An ion source comprising: a first inductively coupled plasma (ICP) source, comprising: a first dielectric cylinder having a first central axis, a first closed end and a first open end; a first gas inlet in communication with said first cylinder adapted to provide a first gas into said first cylinder; and a first antenna surrounding said first dielectric cylinder adapted to inductively couple RF power to said first gas; a second ICP plasma source, comprising: a second dielectric cylinder having a second central axis, a second closed end and a second open end; a second gas inlet in communication with said second cylinder adapted to provide a second gas into said second cylinder; and a second antenna surrounding said second dielectric cylinder adapted to inductively couple RF power to said second gas; and a chamber housing, defining a diffusion chamber, comprising first and second ends, wherein said first end of said diffusion chamber in communication with said open end of said first dielectric cylinder, said second end of said diffusion chamber in communication with said open end of said second dielectric cylinder and an extraction aperture having one dimension much larger than a second dimension, wherein said longer dimension is parallel to said first central axis of said first dielectric cylinder.