WIEN FILTER AND MULTIPLE ELECTRON BEAM INSPECTION APPARATUS

    公开(公告)号:US20230136198A1

    公开(公告)日:2023-05-04

    申请号:US18147263

    申请日:2022-12-28

    Inventor: Toshikatsu AKIBA

    Abstract: A Wien filter includes a cylindrical yoke, a plurality of magnetic poles arranged at intervals along an inner periphery of the yoke, the magnetic poles each joined at one end thereof to the yoke, a coil wound on each of the plurality of magnetic poles, and an electrode disposed at the other end of each of the plurality of magnetic poles, with an insulator between the electrode and the magnetic pole. The magnetic poles each has a recess at the other end thereof, and the insulator and the electrode may be disposed in the recess.

    Ion focusing device
    313.
    发明授权

    公开(公告)号:US11605531B2

    公开(公告)日:2023-03-14

    申请号:US16956858

    申请日:2018-12-13

    Abstract: Apparatus include a plurality of electrode arrangements spaced apart from each other opposite an ion propagation axis and defining an ion transfer channel that extends along the ion propagation axis that tapers between an input end that is situated to receive ions and an output end that is situated to couple the received ions to an input end of an ion guide. Methods include positioning a plurality of electrode arrangements at oblique angles opposite an ion propagation axis so as to form a ion transfer channel that tapers between an input end and an output end, and coupling the output end of the ion transfer channel to an input end of an ion optical element so as to direct ions in the ion transfer channel into the ion optical element. Related systems are also disclosed.

    DEVICE AND METHOD FOR IMPLANTING PARTICLES INTO A SUBSTRATE

    公开(公告)号:US20220199362A1

    公开(公告)日:2022-06-23

    申请号:US17610811

    申请日:2020-05-14

    Abstract: A device for implanting particles in a substrate comprises a particle source and a particle accelerator for generating an ion beam of positively charged ions. The device also comprises a substrate holder and an energy filter, which is arranged between the particle accelerator and the substrate holder. The energy filter is a microstructured membrane with a predefined structural profile for setting a dopant depth profile and/or a defect depth profile produced in the substrate by the implantation. The device also comprises at least one passive braking element for the ion beam. The at least one passive braking element is arranged between the particle accelerator and the substrate holder and is spaced apart from the energy filter.

    APPARATUS OF PLURAL CHARGED-PARTICLE BEAMS

    公开(公告)号:US20220148851A1

    公开(公告)日:2022-05-12

    申请号:US17460381

    申请日:2021-08-30

    Abstract: A multi-beam apparatus for observing a sample with high resolution and high throughput is proposed. In the apparatus, a source-conversion unit changes a single electron source into a virtual multi-source array, a primary projection imaging system projects the array to form plural probe spots on the sample, and a condenser lens adjusts the currents of the plural probe spots. In the source-conversion unit, the image-forming means is on the upstream of the beamlet-limit means, and thereby generating less scattered electrons. The image-forming means not only forms the virtual multi-source array, but also compensates the off-axis aberrations of the plurality of probe spots.

    ION IMPLANTER AND ION SELECTION METHOD

    公开(公告)号:US20220068588A1

    公开(公告)日:2022-03-03

    申请号:US17310545

    申请日:2020-01-27

    Inventor: HISAHIRO ANSAI

    Abstract: An ion implanter according to an embodiment of the present disclosure includes: an ion source that includes a plurality of kinds of ions; an extraction electrode that extracts the plurality of kinds of ions from the ion source and generates an ion beam; an ion beam transport tube that transports the ion beam to an object to be irradiated with the ion beam; and an interaction section that is disposed inside the ion beam transport tube, extends substantially parallel to an extending direction of the ion beam transport tube, and is fixed at a predetermined electric potential.

    Obtaining an energy spectrum of a focused ion beam

    公开(公告)号:US11170974B2

    公开(公告)日:2021-11-09

    申请号:US17097199

    申请日:2020-11-13

    Inventor: Martin Janson

    Abstract: It is provided a method for obtaining an energy spectrum of a focused ion beam when a Bragg peak chamber is used to measure an integrated depth dose, IDD. The method comprises the steps of: simulating doses of a set of nominally mono energetic focused ion beams; determining a lateral extension of a Bragg peak chamber to evaluate; calculating a set of theoretic component IDD curves, CIDDs, by laterally integrating the dose of the simulated set of the nominally mono energetic focused ion beams, over the lateral extension of the Bragg peak chamber; storing calculated CIDDs; obtaining a measured IDD of a focused ion beam with a nominal energy using the Bragg peak chamber; and performing a fit of a linear combination of CIDDs to the measured IDD, to determine an energy spectrum for the focused ion beam with the nominal beam energy.

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