Radiation source for use in lithographic projection apparatus

摘要

A radiation source of a radiation system of a lithographic projection apparatus comprises electrodes for creating a discharge in a space between them such that the discharge collapses into a pinch volume. The collapsing discharge creates a highly ionized, high temperature plasma in the pinch volume. A working fluid is ejected from a jet nozzle into the pinching volume and is thereby raised to a high temperature state and emits extreme ultraviolet radiation.