发明授权
US06389106B1 Method and device for producing extreme ultraviolet and soft X-rays from a gaseous discharge
有权
用于从气体放电产生极紫外和软X射线的方法和装置
- 专利标题: Method and device for producing extreme ultraviolet and soft X-rays from a gaseous discharge
- 专利标题(中): 用于从气体放电产生极紫外和软X射线的方法和装置
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申请号: US09555819申请日: 2000-07-28
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公开(公告)号: US06389106B1公开(公告)日: 2002-05-14
- 发明人: Willi Neff , Rainer Lebert , Guido Schriever , Klaus Bergmann
- 申请人: Willi Neff , Rainer Lebert , Guido Schriever , Klaus Bergmann
- 优先权: DE19753696 19971203
- 主分类号: H01J3500
- IPC分类号: H01J3500
摘要:
A method and a device for generating extreme ultraviolet (EUV) and soft x-ray radiation from a gas discharge. The device has at least two electrodes each having a flush opening by which an axis of symmetry is defined, in which an intermediate space with a wide spatial homogenous gas filling between anode and cathode is provided. The electrodes are formed in such a way, that the gas discharge is formed exclusively in the volume defined by the flush openings. The current pulses with respect to amplitude and period duration are selected in such a way that a dense hot plasma channel is formed on the axis of symmetry, the plasma being the source of EUV and/or soft x-ray radiation. The preferred area of application is the EUV projection lithography in the spectral range around 13 nm.
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