Patent ID: 7605385
Filing Date: 2009-10-20
Classification: H05G

Abstract:
1. An electrode-less discharge extreme ultraviolet light source, comprising: a vacuum vessel; an input nozzle disposed within the vessel along an axis, the input nozzle being configured to input material along the axis from which radiation is desired; an evacuation port disposed along the axis and spaced apart from the input nozzle; a first theta-pinch coil disposed radially about the axis proximate to the input nozzle; a second theta-pinch coil disposed radially about the axis proximate to said evacuation port; a first mirror-field coil disposed radially about the axis proximate to the input nozzle; a second mirror-field coil disposed radially about the axis proximate to the evacuation port; the first theta-pinch coil being disposed between the first mirror-field coil and the axis, and the second theta-pinch coil being disposed between the second mirror-field coil and the axis; the first and second theta pinch coils and the first and second mirror-field coils being driven so as to form and heat a plasma about a position midway between the input nozzle and the evacuation port, thereby emitting radiation at the midway position.