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    Neutron generator
    2.
    发明授权
    Neutron generator 有权

    公开(公告)号：US09839112B2

    公开(公告)日：2017-12-05

    申请号：US14645752

    申请日：2015-03-12

    申请人： Schlumberger Technology Corporation

    发明人： Joel L. Groves

    IPC分类号： H05H3/06 ,  G01V5/10 ,  B82Y99/00

    CPC分类号： H05H3/06 ,  B82Y99/00 ,  G01V5/10 ,  H01J2201/30469 ,  Y10S977/963

    摘要： A neutron generator includes an ion source disposed in a pressurized environment containing an ionizable gas. The ion source includes a substrate with a bundle of carbon nanotubes extending therefrom. The ends of the nanotubes are spaced from a grid. Ion source voltage supply circuitry supplies a positive voltage potential between the substrate and the grid of the ion source to cause ionization of the ionizable gas and emission of ions through the grid. An ion accelerator section is disposed between the ion source and a target. The ion accelerator section accelerates ions that pass through the grid towards the target such that collisions of the ions with the target cause the target to generate and emit neutrons therefrom. The ion source, accelerator section and target are housed in a sealed tube and preferably the carbon nanotubes of the bundle are highly ordered with at least 106 carbon nanotubes per cm2 that extend in a direction substantially parallel to the central axis of the tube. The neutron generator provides gas ionization at much higher atomic to molecular ratio that the prior art, which allows for small compact size designs suitable for logging tools that are used in space-constrained downhole environments.

    Digital X-ray source
    3.
    发明授权
    Digital X-ray source 有权

    公开(公告)号：US09728367B2

    公开(公告)日：2017-08-08

    申请号：US14417546

    申请日：2013-07-12

    申请人： UNIVERSITY-INDUSTRY COOPERATION GROUP OF KYUNG HEE UNIVERSITY

    发明人： Hun Kuk Park ,  Je Hwang Ryu

    IPC分类号： H01J35/06 ,  H05G1/52 ,  H01J35/04

    CPC分类号： H01J35/06 ,  H01J35/04 ,  H01J35/065 ,  H01J2201/30469 ,  H01J2235/062 ,  H05G1/52

    摘要： The present invention discloses a digital X-ray source. The digital X-ray source includes an X-ray generation unit that emits X-rays, wherein the X-ray generation unit includes a cathode electrode; an emitter formed above the cathode electrode; an anode electrode located above the emitter; a gate electrode located between the emitter and the anode electrode; first and second focusing electrodes located between the emitter and the anode electrode; and an electrode connecting unit configured to include one or more insulating tubes capable of fixing and adjusting the locations of the gate electrode and the first and second focusing electrodes on the cathode electrode, and also configured to individually insulate and connect the cathode electrode, the gate electrode and the first and second focusing electrodes from and with electric lines

    Systems and Methods for Generating Tunable Electromagnetic Waves Using Carbon Nanotube-Based Field Emitters
    5.
    发明申请
    Systems and Methods for Generating Tunable Electromagnetic Waves Using Carbon Nanotube-Based Field Emitters 审中-公开
    使用基于碳纳米管的场发射器产生可调谐电磁波的系统和方法

    公开(公告)号：US20160372297A1

    公开(公告)日：2016-12-22

    申请号：US15187659

    申请日：2016-06-20

    申请人： California Institute of Technology

    发明人： Harish Manohara ,  Risaku Toda ,  Mohammad M. Mojarradi ,  Linda Y. Del Castillo

    IPC分类号： H01J35/06 ,  H01J35/08

    CPC分类号： H01J35/065 ,  H01J35/08 ,  H01J2201/30469 ,  H01J2235/081

    摘要： Systems and methods in accordance with embodiments of the invention generate tunable electromagnetic waves using carbon nanotube-based field emitters. In one embodiment, a CNT-based irradiator includes: at least one CNT-based cathode, itself including: a plurality of carbon nanotubes adjoined to a substrate; a plurality of anodic regions; where each anodic region is configured to emit a distinctly different class of photons in a direction away from the at least one cathode in response to a same reception of electrons; where each of the plurality of anodic regions is operable to receive electrons emitted from at least one of said at least one CNT-based cathode; and where each of the at least one CNT-based cathode and the plurality of anodic regions are disposed within a vacuum encasing.

    摘要翻译： 根据本发明的实施例的系统和方法使用基于碳纳米管的场发射器产生可调电磁波。 在一个实施方案中，基于CNT的辐照器包括：至少一个基于CNT的阴极本身包括：与基底相邻的多个碳纳米管; 多个阳极区域; 其中每个阳极区域被配置为响应于相同的电子接收而沿远离所述至少一个阴极的方向发射明显不同类型的光子; 其中所述多个阳极区域中的每一个可操作以接收从所述至少一个基于CNT的阴极中的至少一个发射的电子; 并且其中所述至少一个CNT基阴极和所述多个阳极区域中的每一个设置在真空包装内。

    COMPACT MEDICAL X-RAY IMAGING APPARATUS
    9.
    发明申请
    COMPACT MEDICAL X-RAY IMAGING APPARATUS 审中-公开
    紧凑医疗X射线成像装置

    公开(公告)号：US20160089102A1

    公开(公告)日：2016-03-31

    申请号：US14964283

    申请日：2015-12-09

    申请人： TSUKUBA TECHNOLOGY CO., LTD.

    发明人： Bo Wang ,  Norio Saito ,  Xiaojun Liu ,  Ryoichi Suzuki

    IPC分类号： A61B6/00 ,  H01J35/06

    CPC分类号： A61B6/542 ,  A61B6/40 ,  A61B6/4405 ,  A61B6/56 ,  A61B6/587 ,  G01T1/02 ,  G01T7/00 ,  H01J35/065 ,  H01J2201/30469 ,  H01J2235/062 ,  H05G1/36

    摘要： The present invention provides a compact medical X-ray imaging apparatus, which is a portable X-ray imaging apparatus capable of capturing clear X-ray images while maintaining low radiation exposure. The compact medical X-ray imaging apparatus comprises of: a carbon nanostructure triode cold cathode X-ray tube that radiates X-rays; an X-ray image sensor that captures an image of X-rays that pass through a patient; The first detector that detects the X-ray radiation dose and is positioned between the carbon nanostructure triode cold cathode X-ray tube and the X-ray image sensor, while out of the X-ray irradiation area for the imaging sensor; the second detector that detects the X-ray dose and is positioned in the center on one side of the X-ray image sensor frame; the third detector that detects the X-ray dose and is positioned on the other side of the X-ray image sensor frame facing to the second detector with the detection surface of the image sensor in between the second and third detector; a power supply which supplies a negative and a positive high-voltage pulse to the cathode and anode of the carbon nanostructure triode cold cathode X-ray tube respectively; and an X-ray imaging controller which acquires detection data from the first detector, second detector and third detector in addition to the distance from the carbon nanostructure triode cold cathode X-ray tube to the X-ray image sensor, calculates the X-ray radiation dose and amount of decay, determines the optimum X-ray dose for the patient and the voltage of the carbon nanostructure triode cold cathode X-ray tube, controls the pulse number and pulse width of the high-voltage pulse of the carbon nanostructure triode cold cathode X-ray tube, as well as the voltage of the cathode and the anode with feedback control means.

    摘要翻译： 本发明提供一种紧凑型医用X射线成像装置，其是能够在保持低辐射照射的同时捕获清晰的X射线图像的便携式X射线成像装置。 紧凑型医疗X射线成像装置包括：辐射X射线的碳纳米结构三极管冷阴极X射线管; X射线图像传感器，其捕获通过患者的X射线的图像; 检测X射线辐射剂量的第一检测器，并位于碳纳米结构三极管冷阴极X射线管和X射线图像传感器之间，同时用于成像传感器的X射线照射区域; 所述第二检测器检测所述X射线剂量并位于所述X射线图像传感器框架的一侧的中心; 所述第三检测器检测所述X射线剂量，并且位于所述X射线图像传感器框架的面向所述第二检测器的另一侧，所述图像传感器的检测表面位于所述第二和第三检测器之间; 分别向碳纳米结构三极管冷阴极X射线管的阴极和阳极提供负极和正电压脉冲的电源; 以及除了从碳纳米结构三极管冷阴极X射线管到X射线图像传感器的距离之外，还从第一检测器，第二检测器和第三检测器获取检测数据的X射线成像控制器，计算X射线 辐射剂量和衰减量决定了患者的最佳X射线剂量和碳纳米结构三极管冷阴极X射线管的电压，控制了碳纳米结构三极管的高电压脉冲的脉冲数和脉冲宽度 冷阴极X射线管，以及具有反馈控制装置的阴极和阳极的电压。