Gas jet deflection in pressurized systems

    公开(公告)号:US12049883B2

    公开(公告)日:2024-07-30

    申请号:US18466294

    申请日:2023-09-13

    CPC classification number: F04B37/16 H01J37/147 H01J2237/15

    Abstract: Provided herein are articles of manufacture, systems, and methods employing a gas-deflector plate in low to ultra-high vacuum systems that use differential pumping (e.g., gas-target particle accelerators, mass spectrometers, and windowless delivery ports). In certain embodiments, the gas-deflector plate is configured to be positioned between higher and lower pressure regions in a pressurized system, wherein the gas-deflector plate has a channel therethrough shaped and/or angled such that jetting gas moving through the channel enters the lower pressure region at an angle offset from the vertical axis of the gas-deflector plate and/or the channel. In other embodiments, a jet-deflector component is employed such that the jetting gas strikes such jet-deflector component and is re-directed in another direction.

    SYSTEM AND METHOD FOR RESOLUTION IMPROVEMENT OF CHARGED PARTICLES MICROSCOPY

    公开(公告)号:US20240186102A1

    公开(公告)日:2024-06-06

    申请号:US18410075

    申请日:2024-01-11

    CPC classification number: H01J37/147 H01J37/28

    Abstract: A charged particles beam column for inspecting a sample in a sample plane is presented. The charged particles beam column comprises: a charged particles source generating a charged particles beam propagating along a general propagation path towards the sample plane; and at least one charged particles beam shaping unit. The charged particles shaping unit comprises at least one high-frequency electromagnetic radiation generator located in a vicinity of said general propagation path of the charged particles beam and controllably operated to perform synchronized generation of said high-frequency electromagnetic radiation towards at least one interaction region in said general propagation path, to cause interaction between said radiation and the charged particles, thereby directly affecting energy properties of the charged particles passing through said at least one interaction region in the general propagation path and directly affecting spectral resolution of the charged particles beam at said sample plane.

    MANUFACTURING METHOD FOR ELECTROSTATIC DEFLECTOR AND ELECTROSTATIC DEFLECTOR

    公开(公告)号:US20240153731A1

    公开(公告)日:2024-05-09

    申请号:US18039177

    申请日:2021-11-24

    Inventor: Takeshi MUNEISHI

    CPC classification number: H01J37/147 H01J2237/151

    Abstract: The manufacturing method for an electrostatic deflector includes: obtaining a plurality of first compacts having a sheet-like shape by molding a raw material containing a ceramic into each desired shape; obtaining a second compact by layering the plurality of first compacts; obtaining a tubular body by firing the second compact; and forming an internal electrode and an external electrode on an inner wall surface of the tubular body and on a surface other than the inner wall surface. In the obtaining the plurality of first compacts, a wiring layer serving as a connection conductor that electrically connects the internal electrode and the external electrode is formed on a surface of the first compact that is predetermined.

    GAS JET DEFLECTION IN PRESSURIZED SYSTEMS
    4.
    发明公开

    公开(公告)号:US20230417233A1

    公开(公告)日:2023-12-28

    申请号:US18466294

    申请日:2023-09-13

    CPC classification number: F04B37/16 H01J37/147 H01J2237/15

    Abstract: Provided herein are articles of manufacture, systems, and methods employing a gas-deflector plate in low to ultra-high vacuum systems that use differential pumping (e.g., gas-target particle accelerators, mass spectrometers, and windowless delivery ports). In certain embodiments, the gas-deflector plate is configured to be positioned between higher and lower pressure regions in a pressurized system, wherein the gas-deflector plate has a channel therethrough shaped and/or angled such that jetting gas moving through the channel enters the lower pressure region at an angle offset from the vertical axis of the gas-deflector plate and/or the channel. In other embodiments, a jet-deflector component is employed such that the jetting gas strikes such jet-deflector component and is re-directed in another direction.

    APERTURE PATTERNS FOR DEFINING MULTI-BEAMS
    7.
    发明公开

    公开(公告)号:US20230282440A1

    公开(公告)日:2023-09-07

    申请号:US18134020

    申请日:2023-04-12

    CPC classification number: H01J37/147 H01J37/12 H01J2237/2817

    Abstract: Disclosed herein is an aperture array configured to define sub-beams that are scanned in a scanning direction in a charged particle apparatus, the aperture array comprising a plurality of apertures arranged in an aperture pattern that comprises: a plurality of parallel aperture rows, wherein apertures are arranged along the aperture rows and the aperture rows are inclined relative to the scanning direction; an edge aperture row defining an edge of the aperture pattern; and an adjacent aperture row adjacent the edge row; wherein the edge aperture row and the adjacent aperture row each comprise fewer apertures than another aperture row of the aperture pattern.

    Transmission electron microscope and method of adjusting optical system

    公开(公告)号:US11742176B2

    公开(公告)日:2023-08-29

    申请号:US17536288

    申请日:2021-11-29

    Applicant: JEOL Ltd.

    Abstract: A transmission electron microscope includes a control unit that: determines an excitation amount of a second illumination system lens based on an excitation amount of first illumination system lens such that the second illumination system lens satisfies a first optical condition; and determines a control amount of a first deflector and a control amount of a second deflector based on the excitation amount of the second illumination system lens such that the first deflector and the second deflector satisfy a second optical condition. The first optical condition is for a convergence angle of the electron beam to be constant even if the excitation amount of the first illumination system lens has changed, and the second optical condition is for an illuminating position of the electron beam and an illuminating angle of the electron beam to be constant even if the excitation amount of the first illumination system lens has changed.

Patent Agency Ranking