Patent ID: 6982421
Filing Date: 2006-01-03
Classification: H05G

Abstract:
1. An EUV source which comprises the following: an insulator which has a discharge space inside; a first electrode which is located on a first side of the insulator; and a second electrode which is located on an opposite side of the insulator, and an inlet for a flow of emission gas into the discharge space for producing EUV radiation within the discharge space when a pulse voltage is applied to the first and second electrodes, and an outlet at the first side of the insulator for emission of a plasma discharge, wherein the second electrode seals said opposite end of the discharge space, wherein a gas supply space is provided within the insulator for receiving said flow of emission gas, said gas supply space being connected upstream of the discharge space and being connected thereto, and wherein the gas supply space is located radially with respect to an optical axis of the EUV source.