Gasdynamically-controlled droplets as the target in a laser-plasma extreme ultraviolet light source

A target material delivery system in the form of a nozzle (50) for an EUV radiation source (10). The nozzle (50) includes a target material supply line (66) having an orifice (68) through which droplets (76) of a liquid target material (64) are emitted, where the droplets (76) have a predetermined s...

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Bibliographische Detailangaben
Hauptverfasser:	BUNNELL, ROBERT A, ORSINI, ROCCO A, PETACH, MICHAEL B, MCGREGOR, ROY D
Format:	Patent
Sprache:	eng ; fre ; ger
Schlagworte:	APPARATUS SPECIALLY ADAPTED THEREFOR CINEMATOGRAPHY ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR ELECTRICITY ELECTROGRAPHY GAMMA RAY OR X-RAY MICROSCOPES HOLOGRAPHY IRRADIATION DEVICES MATERIALS THEREFOR NUCLEAR ENGINEERING NUCLEAR PHYSICS ORIGINALS THEREFOR PHOTOGRAPHY PHOTOMECHANICAL PRODUCTION OF TEXTURED OR PATTERNED SURFACES,e.g. FOR PRINTING, FOR PROCESSING OF SEMICONDUCTORDEVICES PHYSICS PLASMA TECHNIQUE PRODUCTION OF ACCELERATED ELECTRICALLY-CHARGED PARTICLES OR OFNEUTRONS PRODUCTION OR ACCELERATION OF NEUTRAL MOLECULAR OR ATOMICBEAMS TECHNIQUES FOR HANDLING PARTICLES OR IONISING RADIATION NOTOTHERWISE PROVIDED FOR X-RAY TECHNIQUE
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Beschreibung
Zusammenfassung:	A target material delivery system in the form of a nozzle (50) for an EUV radiation source (10). The nozzle (50) includes a target material supply line (66) having an orifice (68) through which droplets (76) of a liquid target material (64) are emitted, where the droplets (76) have a predetermined size, speed and spacing therebetween. The droplets (76) are mixed with a carrier gas (74) in a mixing chamber (54) enclosing the target material chamber (66) and the mixture of the droplets (76) and the carrier gas (74) enter a drift tube (56) from the mixing chamber (54). The droplets (76) are emitted into an accelerator chamber (124) from the drift tube (56) where the speed of the droplets (76) is increased to control the spacing therebetween. A vapor extractor (90) can be mounted to the accelerator chamber (124) or the drift tube (56) to remove the carrier gas (74) and target material vapor, which would otherwise adversely affect the EUV radiation generation.