DISCHARGE SOURCE WITH GAS CURTAIN FOR PROTECTING OPTICS FROM PARTICLES

A gas curtain device is employed to deflect debris that is generated by an extreme ultraviolet and soft x-ray radiation discharge source such as an electric discharge plasma source. The gas curtain device projects a stream of gas over the path of the radiation to deflect debris particles into a dire...

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Bibliographische Detailangaben
Hauptverfasser: KANOUFF, MICHAEL, P, FORNACIARI, NEAL, R
Format: Patent
Sprache:eng ; fre ; ger
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Zusammenfassung:A gas curtain device is employed to deflect debris that is generated by an extreme ultraviolet and soft x-ray radiation discharge source such as an electric discharge plasma source. The gas curtain device projects a stream of gas over the path of the radiation to deflect debris particles into a direction that is different from that of the path of the radiation. The gas curtain can be employed to prevent debris accumulation on the optics used in photolithography.