Patent ID: 8142607

Claim:
An ion source comprising: a. a first helicon plasma source, comprising: i. a first dielectric cylinder having a first central axis, a first closed end and a first open end; ii. a first magnet surrounding said first dielectric, cylinder adapted to generate a magnetic field in the direction of said central axis, oriented toward said open end of said first dielectric cylinder; and iii. a first antenna capable of generating helicon waves within said first dielectric cylinder; b. a second helicon plasma source, comprising: i. a second dielectric cylinder having a second central axis, a second closed end and a second open end; ii. a second magnet surrounding said second dielectric cylinder adapted to generate a magnetic field in the direction of said second central axis, oriented toward said open end of said second dielectric cylinder; and iii. a second antenna capable of generating helicon waves within said second dielectric, cylinder; c. a chamber housing, defining a diffusion chamber, comprising first and second ends, wherein said first end of said chamber is in communication with said open end of said first dielectric cylinder, said second end of said chamber is in communication with said open end of said second dielectric cylinder and an extraction aperture having one dimension longer than a second dimension, wherein said longer dimension is parallel to said central axis of said first dielectric cylinder.