Abstract:
PROBLEM TO BE SOLVED: To provide a radiation source having a nozzle through which a fuel can pass without encountering an unexpected or unintended trouble or limitation.SOLUTION: The radiation source includes a reservoir, a nozzle, a laser and a positive lens. The reservoir is configured to hold the volume of a fuel. The nozzle in fluid connection with the reservoir is configured to guide the flow of fuel toward a plasma formation position along a track. The laser is configured to guide the laser radiation to the flow at the plasma formation position, and to generate radiation-generating plasma during use. The positive lens configuration is configured so as to focus at least the potential spread of the track of fuel flow toward the plasma formation position, and the lens includes an electric field generation element and/or a magnetic field generation element.
Abstract:
PROBLEM TO BE SOLVED: To provide a gas gage improving sensibility measuring partial differences of profiles for wafers for usage in a lithographic device. SOLUTION: The gas gauge includes a gas delivery pipe arranged so as to divide a distance up to an object. The gas delivery pipe includes a gas conduit, and supplies a proper measuring gas through the gas conduit. The measuring gas is discharged from the gas delivery pipe through an outlet under a pressure to collide with the object in an interaction region and the pressure of a rebounded gas is measured by a pressure detector. The gas having a small atomic number is used. A pressure sensor includes a thin film arranged in the gas delivery pipe at least partially surrounding the gas conduit in a gas outlet or a vicinity of the gas outlet. The pressure sensor includes a thin-film disk arranged around the gas conduit. The pressure sensor is disposed substantially on a common surface, and isolated from the gas conduit but includes a plurality of proper pressure elements for surrounding the gas conduit. COPYRIGHT: (C)2010,JPO&INPIT
Abstract:
PROBLEM TO BE SOLVED: To provide a radiation source and a lithographic apparatus for suppressing generation of particles. SOLUTION: An extreme ultraviolet radiation source includes a radiation source material delivery system configured to transmit a radiation source material to a plasma starting site along a predetermined orbit. The radiation source also includes: a laser system configured to direct a laser beam to the radiation source material in the plasma starting site for generating plasma releasing extreme ultraviolet; and a catch configured to catch the radiation source material to be transmitted from the radiation source material target delivery system. COPYRIGHT: (C)2010,JPO&INPIT
Abstract:
PROBLEM TO BE SOLVED: To remove fuel debris before arriving at a radiation collector. SOLUTION: A radiation source is configured so as to generate extreme ultraviolet radiation. A radiation source includes a chamber, a fuel supply configured to supply a fuel to a plasma formation region in the chamber, and a laser configured to emit a radiation beam to the plasma formation region so that plasma for emitting extreme ultraviolet radiation is generated when the radiation beam impacts the fuel. A fuel particulate interceptor is arranged in the chamber and includes a material having affinity with the fuel so that when the fuel particulates impact a surface of the fuel particulate interceptor, the fuel particulates are stuck to the surface. The fuel particulate interceptor is configured against a reflective element so as to prevent all fuel particulates from falling onto the reflective element due to the influence of gravity. COPYRIGHT: (C)2010,JPO&INPIT
Abstract:
The invention relates to a method for determining a suppression factor of a suppression system. The suppression system is arranged to suppress migration of a contaminant gas out of a first system. The suppression factor is an indication of the performance of the suppression system. The method includes introducing a tracer gas in the sub-system, providing a detection system configured to detect the amount of tracer gas that has migrated out of the first system, determining a first suppression factor for the suppression system for the tracer gas. The method further includes determining a second suppression factor for the suppression system for the contaminant gas based on the first suppression factor.
Abstract:
A radiation source comprising a fuel source configured to deliver fuel to a location from which the fuel emits EUV radiation. The radiation source further comprises an immobile fuel debris receiving surface provided with a plurality of grooves. The grooves have orientations which are arranged to direct the flow of liquid fuel under the influence of gravity in one or more desired directions.
Abstract:
A fuel stream generator comprising a nozzle connected to a fuel reservoir, wherein the nozzle is provided with a gas inlet configured to provide a sheath of gas around fuel flowing along the nozzle is disclosed. Also disclosed are a method of generating fuel droplets and a lithography apparatus incorporating the fuel stream generator.