Patent ID: 8590485
Filing Date: 2013-11-26
Classification: H01J,H05H

Abstract:
1. An inductively coupled plasma (ICP) source for extracting a ribbon ion beam, comprising: a chamber comprising chamber body comprising top, bottom and side surfaces, said chamber body having a length, a depth and a height, wherein said height is defined as a distance between said top surface and said bottom surface, said length is defined as a distance between said side surfaces and where said height is smaller than said length, a dielectric window; and an end opposite said dielectric window, having at least one elongated extraction slit parallel to and symmetrically spaced from said top and bottom surfaces, said elongated extraction slit extends between said side surfaces to extract a ribbon ion beam, and wherein said depth is defined as a distance between said dielectric window and said end opposite said dielectric window, and; at least one gas inlet disposed in at least one of said top surface and said bottom surface of said chamber body to allow the flow of gas into said chamber; an elongated planar spiral antenna configured to excite said gas in said chamber to form a plasma, said antenna located in close proximity and parallel to said dielectric window; and extraction optics located proximate said elongated extraction slit to extract ions from said plasma through said elongated extraction slit.