Methode zum Stoppen von Ionen und Verunreinigungen in Plasma-Strahlungquellen im extremem-ultaviolett oder weichen Röntgenbereich durch Verwendung von Krypton

A method and device for filtering ions and small debris by using krypton or its mixtures to fill the chamber of the EUV-radiation source. The method can be combined with mechanical methods of filtering debris particles with large size (greater than one micron) and allows to obtain plasma EUV-radiati...

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Bibliographische Detailangaben
Hauptverfasser: ZHENG, CHENGEN, MEZI, LUCA, FLORA, FRANCESCO
Format: Patent
Sprache:ger
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Beschreibung
Zusammenfassung:A method and device for filtering ions and small debris by using krypton or its mixtures to fill the chamber of the EUV-radiation source. The method can be combined with mechanical methods of filtering debris particles with large size (greater than one micron) and allows to obtain plasma EUV-radiation without polluting debris and to extend the useful life of the mirrors of a microlithography apparatus.