Patent ID: 7476884

Claim:
A device for generating extreme ultraviolet (EUV) radiation on the basis of a discharge plasma comprising: a discharge chamber having a discharge area for a gas discharge in order to form a plasma that emits the desired radiation; a first electrode and a second electrode which are electrically separated from one another by an insulator with dielectric rigidity except for a part defining the discharge area; said second electrode having an outlet opening for the radiation emitted by the discharge plasma; a high-voltage power supply for generating high-voltage pulses for the two electrodes; an injection device having an injection nozzle which is directed to the discharge area for injecting a series of individual volumes of a source material for an electric discharge, the source material serving to generate the desired radiation; and means being provided for successive vaporization of the individual volumes in the discharge area; wherein the injection device and the means for successive vaporization are triggered at a repetition rate corresponding to a frequency that is applied to the high-voltage pulses of the gas discharge.