摘要:
A method of generating in particular EUV radiation (12) and/or soft X-ray radiation (12a) emitted by a plasma (26) is described. The plasma (26) is formed by an operating gas (22) in a discharge space (14) which comprises at least one radiation emission window (16) and an electrode system with at least one anode (18) and at least one cathode (20). This electrode system transmits electrical energy to the plasma (26) by means of charge carriers (24) introduced into the discharge space (14). It is suggested for obtaining a reliable ignition of the plasma (26) at high repetition frequencies that a radiation (30) generated by at least one radiation source (28) is introduced into the discharge space (14) for making available the discharge carriers (24).
摘要:
A method of generating in particular EUV radiation (12) and/or soft X-ray radiation (12a) emitted by a plasma (26) is described. The plasma (26) is formed by an operating gas (22) in a discharge space (14) which comprises at least one radiation emission window (16) and an electrode system with at least one anode (18) and at least one cathode (20). This electrode system transmits electrical energy to the plasma (26) by means of charge carriers (24) introduced into the discharge space (14). It is suggested for obtaining a reliable ignition of the plasma (26) at high repetition frequencies that a radiation (30) generated by at least one radiation source (28) is introduced into the discharge space (14) for making available the discharge carriers (24).
摘要:
The present invention relates to an optical device and a method of in situ treating an optical component (2, 6, 13) reflecting EUV and/or soft X-ray radiation in said optical device, said optical component (2, 6, 13) being arranged in a vacuum chamber (14) of said optical device and comprising one or several reflecting surfaces (3) having a top layer of one or several surface materials. In the method, a source (1, 5) of said one or several surface materials is provided in said chamber (14) of said optical device and surface material from said source (1, 5) is deposited on said one or several reflecting surfaces (3) during operation and/or during operation-pauses of said optical device in order to cover or substitute deposited contaminant material and/or to compensate for ablated surface material.
摘要:
A method of in situ treating an optical component reflecting EUV and/or soft X-ray radiation in an optical device includes providing at least one source of one or several surface materials in a vacuum chamber of the optical device where the optical component is arranged. The optical component includes one or several reflecting surfaces having a top layer of one or several surface materials. The method includes providing a source of the one or several surface materials in the chamber, and depositing surface material from the source on the one or several reflecting surfaces during operation and/or during operation-pauses of the optical device in order to cover or substitute deposited contaminant material and/or to compensate for ablated surface material.
摘要:
The present invention relates to a method and device for generating optical radiation, in particular EUV radiation or soft x-rays, by means of an electrically operated discharge. A plasma (15) is ignited in a gaseous medium between at least two electrodes (1, 2), wherein said gaseous medium is produced at least partly from a liquid material (6) which is applied to a surface moving in the discharge space and is at least partially evaporated by one or several pulsed energy beams. In the proposed method and device the pulses (9) of said pulsed energy beams are directed to at least two different lateral locations with respect to a moving direction of said surface. With this measure, the radiation emission volume is expanded, less sensitive to spatial fluctuations and can be adapted better to the requirements of optical systems of any applications. Furthermore, the optical output power can be increased by this measure.
摘要:
The present invention relates to a method and device for generating optical radiation, in particular EUV radiation or soft x-rays, by means of an electrically operated discharge. A plasma (15) is ignited in a gaseous medium between at least two electrodes (1, 2), wherein said gaseous medium is produced at least partly from a liquid material (6) which is applied to a surface moving in the discharge space and is at least partially evaporated by one or several pulsed energy beams. In the proposed method and device the pulses (9) of said pulsed energy beams are directed to at least two different lateral locations with respect to a moving direction of said surface. With this measure, the radiation emission volume is expanded, less sensitive to spatial fluctuations and can be adapted better to the requirements of optical systems of any applications. Furthermore, the optical output power can be increased by this measure.
摘要:
The present invention relates to a method of cleaning and after treatment of optical surfaces in an irradiation unit, said irradiation unit comprising a radiation source (1, 31) emitting EUV-radiation and/or soft X-rays, a first volume (40) following said radiation source (1, 31) and containing first optical components (3, 33) with said optical surfaces, and a second volume (41) following said first volume (40) and containing second optical components (38). The method comprises at least one cleaning step in which a first gas or gas mixture is brought into contact with said optical surfaces, thereby forming volatile compounds with contaminations deposited on said optical surfaces, wherein said compounds are pumped out of the first volume (40) together with the first gas or gas mixture. In an after treatment step following said cleaning step the radiation source (1, 3) is operated once or several times in order to release residues of the cleaning step from the optical surfaces by irradiating said optical surfaces with said EUV-radiation or soft X-rays while the first volume (40) is separated from the second volume (41), wherein said released residues are pumped out of the first volume (40). With this method an improved cleaning result is achieved.
摘要:
A cleaning arrangement for an optical system and in particular for an optical system designed for EUV radiation. The cleaning arrangement has a gas inlet (28) for a reactive gas (29). Contaminants (23) that have deposited on the surface of optical elements (110) are detached by the reactive gas. Also provided are getter surfaces (32) that are preferably arranged opposite the surfaces to be clean and by which the contaminants detached from these surfaces are absorbed. This absorption may take place as a result of condensation on the getter surface and also by chemical reaction.
摘要:
An apparatus for filling and closing sacks or bags, in particular paper side folding sacks, has a plurality of processing stations including a filling station, stationary clamping elements for holding the sack in an open position and a slide cyclically movable between processing stations. Outside grippers are mounted on the slide which are designed to grasp an at least partially filled sack at its side folding by clamping the folding from the outside in said filling station and transporting the sack by means of the slide to the succeeding processing station.
摘要:
A cleaning arrangement for an optical system and in particular for an optical system designed for EUV radiation. The cleaning arrangement has a gas inlet (28) for a reactive gas (29). Contaminants (23) that have deposited on the surface of optical elements (110) are detached by the reactive gas. Also provided are getter surfaces (32) that are preferably arranged opposite the surfaces to be clean and by which the contaminants detached from these surfaces are absorbed. This absorption may take place as a result of condensation on the getter surface and also by chemical reaction.