Patent ID: 9119279
Filing Date: 2015-08-25
Classification: H05G

Abstract:
1. A radiation source for generating short-wavelength radiation from plasma comprising: a molten bath of a liquid metal being a source material; at least one revolving element partially immersed in the source material to carry the source material into a plasma zone; at least one laser directed to the plasma zone for exciting the source material and a receptacle for collecting unused source material constructed as a catch trough having a trough opening below the plasma zone and below the molten bath in a direction of a force of gravity, at least one inclined side wall for catching and concentrating the unused source material in a deepest trough area of the catch trough; at least one heating element attached to the catch trough for heating the unused source material to a temperature T above a melting temperature T a control unit for controlling the temperature T in the catch trough with at least one temperature sensor attached to the catch trough.