GAS RESERVOIR, GAS SUPPLY DEVICE HAVING A GAS RESERVOIR, AND PARTICLE BEAM APPARATUS HAVING A GAS SUPPLY DEVICE

    公开(公告)号:US20230282442A1

    公开(公告)日:2023-09-07

    申请号:US18079074

    申请日:2022-12-12

    Abstract: The invention relates to a gas reservoir (3000) for receiving a precursor (3035). The gas reservoir (3000) has a gas-receiving unit (3004) which is arranged in a first receiving unit (3002) of a basic body (3001), and a sliding unit (3007) which is arranged movably in a second receiving unit (3003) of the basic body (3001). The gas-receiving unit (3004) has a movable closure unit (3006) for opening or closing a gas outlet opening (3005) of the gas-receiving unit (3004). In a first position of the sliding unit (3007), both a first opening (3009) of a sliding-unit line device (3008) is fluidically connected to a first basic body opening (3011) and a second opening (3010) of the sliding-unit line device (3008) is fluidically connected to a second basic body opening (3012). In the second position of the sliding unit (3007), both the first opening (3009) is arranged at an inner wall (3015) of the second receiving unit (3003) and the second opening (3010) is arranged at the movable closure unit (3006).

    TRANSMISSION CHARGED PARTICLE MICROSCOPE WITH IMPROVED EELS/EFTEM MODULE

    公开(公告)号:US20190180973A1

    公开(公告)日:2019-06-13

    申请号:US16210531

    申请日:2018-12-05

    Applicant: FEI Company

    Abstract: A method of using a Transmission Charged Particle Microscope comprising:A specimen holder, for holding a specimen;A source, for producing a beam of charged particles;An illuminator, for directing said beam so as to irradiate the specimen;An imaging system, for receiving a flux of charged particles transmitted through the specimen and directing it onto a sensing device;A controller, for controlling at least some operational aspects of the microscope, in which method the sensing device is chosen to be an EELS/EFTEM module comprising:An entrance plane;An image plane, where in EELS mode an EELS spectrum is formed and in EFTEM mode an EFTEM image is formed;A slit plane between said entrance plane and image plane, where in EFTEM mode an energy dispersed focus is formed;A dispersing device, between said entrance plane and slit plane, for dispersing an incoming beam into an energy-dispersed beam with an associated dispersion direction;A first series of quadrupoles between said dispersing device and slit plane;A second series of quadrupoles between said slit plane and image plane, which dispersing device and quadrupoles are arranged along an optical axis, whereby, for a Cartesian coordinate system (X,Y,Z) in which said optical axis is disposed along Z, said dispersion direction is defined as being parallel to X,comprising the following steps:In said first quadrupole series, exciting one or more quadrupoles so as to deflect an off-axis non-dispersive YZ ray leaving said dispersing device onto a path paraxial to said optical axis from said slit plane to said image plane;In said second quadrupole series, exciting either: (a) A single quadrupole; or (b) A pair of adjacent quadrupoles, so as to focus said energy-dispersed beam onto said image plane.

    Method and System for Aberration Correction in an Electron Beam System

    公开(公告)号:US20180158644A1

    公开(公告)日:2018-06-07

    申请号:US15371557

    申请日:2016-12-07

    Abstract: An electron-optical system for performing electron microscopy is disclosed. The system includes an electron beam source configured to generate a primary electron beam. The system includes a source lens, a condenser lens and an objective lens disposed along an optical axis. The system includes a first Wien filter disposed along the optical axis and a second Wien filter disposed along the optical axis. The first Wien filter and the second Wien filter are disposed between the source lens and the objective lens. The first Wien filter is configured to correct chromatic aberration in the primary beam. The system also includes a detector assembly configured to detect electrons emanating from the surface of the sample.

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