Patent ID: 9070538
Filing Date: 2015-06-30
Classification: C23C,H01J,H01L

Abstract:
1. A plasma flood gun for use in ion implantation system, the plasma flood gun comprising: an insulating block portion having a base portion and a central body portion; first and second conductive block portions disposed on the base portion and opposite sides of the central body portion; and a conductive strap coupling the first conductive block portion to the second conductive block portion; the first and second conductive block portions and the central body portion including respective recesses formed therein which form a closed loop plasma chamber, wherein the first and second conductive block portions receive radio frequency (RF) electrical power to generate a plasma within the closed loop plasma chamber by exciting a gaseous substance; and wherein the respective recess in the second conductive block portion includes a pinch region having a cross-sectional dimension that is smaller than a cross-sectional dimension of a portion of the closed loop plasma chamber directly adjacent the pinch region, the pinch region positioned immediately adjacent an outlet portion having an outlet aperture.