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95 条记录 (耗时 0.019 秒)

    Apparatuses and methods for generating distributed x-rays
    52.
    发明授权
    Apparatuses and methods for generating distributed x-rays 有权

    公开(公告)号：US09786465B2

    公开(公告)日：2017-10-10

    申请号：US14136362

    申请日：2013-12-20

    申请人： TSINGHUA UNIVERSITY ,  NUCTECH COMPANY LIMITED

    发明人： Yuanjing Li ,  Yaohong Liu ,  Jinsheng Liu ,  Huaping Tang ,  Chuanxiang Tang ,  Huaibi Chen ,  Xinshui Yan

    IPC分类号： H01J35/14 ,  H01J35/30

    CPC分类号： H01J35/14 ,  H01J35/16 ,  H01J35/30 ,  H01J2235/16

    摘要： An apparatus and method to generate distributed x-rays. A hot cathode of an electron gun is used in vacuum to generate electron beams having certain initial movement energy and speed. Periodic scanning is performed with the initial low-energy electron beams, which are thus caused to be reciprocally deflected. A current-limiting device is provided in the travel path of the electron beams along the direction of the reciprocal deflection. Through holes arranged in an array on the current-limiting device, only part of the electron beams targeting specific positions can pass to form sequential electron beam currents distributed in an array. These electron beam currents are accelerated by a high-voltage electric field to obtain high energy, bombard an anode target, and thus sequentially generate corresponding focus spots and x-rays distributed in an array at the anode target.

    GAS ANALYSIS DEVICE AND METHOD FOR DETECTING SAMPLE GAS
    56.
    发明申请
    GAS ANALYSIS DEVICE AND METHOD FOR DETECTING SAMPLE GAS 有权

    公开(公告)号：US20220404312A1

    公开(公告)日：2022-12-22

    申请号：US17806805

    申请日：2022-06-14

    申请人： Nuctech Company Limited

    发明人： Yan Wang ,  Qingjun Zhang ,  Yuanjing Li ,  Zhiqiang CHEN ,  Jianmin Li ,  Yaohong Liu ,  Ge Li ,  Zhongyuan Hao ,  Nei Yang ,  Guangqin Li

    IPC分类号： G01N27/623 ,  H01J49/42 ,  H01J49/00 ,  H01J49/06

    摘要： The present disclosure provides a gas analysis device and a method for detecting sample gas. The gas analysis device includes: an ion mobility spectrometer including an ion mobility tube, an ion gate, a plurality of electrodes, a suppression grid, and a Faraday plate sequentially disposed in the ion mobility tube, wherein the Faraday plate is configured to receive sample ions discharged from the suppression grid, and the Faraday plate is provided with a through hole; a mass spectrometer; a gate valve disposed between the Faraday plate and an ion inlet of the mass spectrometer; and a controller configured to control an opening or closing of the gate valve to allow the sample ions discharged from the suppression grid to flow into the mass spectrometer through the through hole of the Faraday plate when the gate valve is opened.

    Drawer-type carrying device for accelerator and cabin structure for accelerator
    57.
    发明授权
    Drawer-type carrying device for accelerator and cabin structure for accelerator 有权

    公开(公告)号：US11183354B2

    公开(公告)日：2021-11-23

    申请号：US16231667

    申请日：2018-12-24

    申请人： Nuctech Company Limited

    发明人： Yaohong Liu ,  Liang Zhang ,  Xiaotong Zhang

    IPC分类号： H01H5/00 ,  H01J33/02 ,  H05H5/03 ,  H05H7/22

    摘要： The present disclosure provides a drawer-type carrying device for an accelerator and an cabin structure for the accelerator, the drawer-type carrying device for the accelerator includes a frame mechanism and a drawing mechanism. The frame mechanism is used for installing the accelerator; the drawing mechanism is connected with the frame mechanism and the frame mechanism is movable relative to the drawing mechanism. The cabin structure for the accelerator includes a cabin, a shielding mechanism and a drawer-type carrying device for the accelerator. The cabin has a working area and a maintenance area. The shielding mechanism is disposed in the working area and has a side opening door facing towards the maintenance area. The frame mechanism is capable of drawn from the shielding mechanism into the maintenance area when the side opening door is opened.