CHARGED PARTICLE APPARATUS AND METHOD
    11.
    发明公开

    公开(公告)号:US20240128043A1

    公开(公告)日:2024-04-18

    申请号:US18530109

    申请日:2023-12-05

    CPC classification number: H01J37/12 H01J37/147 H01J2237/2448

    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.

    CHARGED PARTICLE DETECTOR ASSEMBLY
    15.
    发明公开

    公开(公告)号:US20240272312A1

    公开(公告)日:2024-08-15

    申请号:US18568628

    申请日:2022-06-28

    CPC classification number: G01T1/20182 G01N23/2251

    Abstract: A detector assembly for use in a charged particle device for an assessment tool to detect signal particles emitted by a sample in response to a charged particle beam, the detector assembly including: a scintillator element configured to generate photons on interaction with signal particles above a first energy threshold; a charge based element configured to detect signal particles below a second energy threshold, wherein the charge based element is positioned so that at least some of the signal particles above a first energy threshold pass through the charged based element to the scintillator element.

    MULTI-SOURCE CHARGED PARTICLE ILLUMINATION APPARATUS

    公开(公告)号:US20220415611A1

    公开(公告)日:2022-12-29

    申请号:US17778036

    申请日:2020-11-19

    Abstract: A multi-source illumination apparatus for illuminating a sample with charged particles, wherein beams, from a plurality of sources, are arranged such that a beam from at least one source intersects, at a plane of a condenser lens, with at least part of one other beam from a different one of the plurality of sources. The condenser lens is configured to separately collimate the received beams from each source. A manipulator array arrangement is configured to manipulate the collimated beams to generate one or more beams, in a single column, that include charged particles from the plurality of sources. The manipulator array arrangement includes a multi-beam generator configured to receive the plurality of substantially parallel substantially collimated beams generated by the deflector array, and generate a multibeam in dependence on the received plurality of substantially parallel substantially collimated beams, wherein the multi-beam includes a plurality of substantially collimated sub-beams.

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