Patent ID: 7630475
Filing Date: 2009-12-08
Classification: G03F,H05G

Abstract:
1. Gas discharge source, for EUV radiation and/or soft X-ray radiation, in which, in a vacuum chamber, at least two electrodes with an at least approximately circular periphery are rotatably mounted for rotation, wherein the electrodes at one spatial position have a small spacing for the ignition of a gas discharge and are in each case connected to a reservoir for a liquid, electrically conductive material in such a way that, during rotation, a liquid film of the electrically conductive material can form over the circular periphery of the electrodes and a flow of current to the electrodes is made possible via the reservoirs, wherein the electrodes are in each case connected to the reservoirs via a connecting element, by means of which a gap is formed between the electrode and the connecting element, said gap extending over a partial section of the circular periphery of each electrode to a length which is larger than a width of the gap, into which gap the liquid, electrically conductive material can penetrate from the reservoir during rotation of the electrode via at least one feed channel formed in the connecting element.