Technique for monitoring and controlling a plasma process
    102.
    发明授权
    Technique for monitoring and controlling a plasma process 失效
    监测和控制等离子体工艺的技术

    公开(公告)号:US07453059B2

    公开(公告)日:2008-11-18

    申请号:US11678524

    申请日:2007-02-23

    IPC分类号: G01N27/26 G01N33/00 H01J49/40

    CPC分类号: H01J37/32422 H01J37/32935

    摘要: A time-of-flight ion sensor for monitoring ion species in a plasma includes a housing. A drift tube is positioned in the housing. An extractor electrode is positioned in the housing at a first end of the drift tube so as to attract ions from the plasma. A plurality of electrodes is positioned at a first end of the drift tube proximate to the extractor electrode. The plurality of electrodes is biased so as to cause at least a portion of the attracted ions to enter the drift tube and to drift towards a second end of the drift tube. An ion detector is positioned proximate to the second end of the drift tube. The ion detector detects arrival times associated with the at least the portion of the attracted ions.

    摘要翻译: 用于监测等离子体中的离子种类的飞行时间离子传感器包括壳体。 漂移管位于外壳中。 提取器电极位于漂移管的第一端处的壳体中,以便从等离子体吸引离子。 多个电极位于漂移管的靠近提取器电极的第一端。 多个电极被偏置,以使至少一部分吸引的离子进入漂移管并漂移到漂移管的第二端。 离子检测器位于漂移管的第二端附近。 离子检测器检测与吸引的离子的至少一部分相关联的到达时间。