CHARGED PARTICLE APPARATUS AND METHOD
    25.
    发明公开

    公开(公告)号:EP4102535A1

    公开(公告)日:2022-12-14

    申请号:EP21178234.7

    申请日:2021-06-08

    Abstract: The disclosure relates to a charged particle beam apparatus configured to project charged particle beams towards a sample. The charged particle beam apparatus comprises: a plurality of charged particle-optical columns configured to project respective charged particle beams towards the sample, wherein each charged particle-optical column comprises: a charged particle source configured to emit the charged particle beam towards the sample, the charged particle sources being comprised in a source array; an objective lens comprising an electrostatic electrode configured to direct the charged particle beam towards the sample; and a detector associated with the objective lens array, configured to detect signal charged particles emitted from the sample. The objective lens is the most down-beam element of the charged particle-optical column configured to affect the charged particle beam directed towards the sample.

    APERTURE BODY, FLOOD COLUMN AND CHARGED PARTICLE TOOL

    公开(公告)号:EP3879557A1

    公开(公告)日:2021-09-15

    申请号:EP20161844.4

    申请日:2020-03-09

    Abstract: An aperture body for passing a portion of a charged particle beam propagating along a beam path comprising an axis, the aperture body comprising: an aperture portion defining an opening around the axis; wherein the aperture portion comprises, adjacent to the opening, an up-beam facing surface, and a down-beam facing surface; wherein the up-beam facing surface is angled with respect to a plane that is perpendicular to the axis, so that the opening in the up-beam facing surface is up-beam of a more radially outward portion of the up-beam facing surface.

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