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    Neutron generator
    5.
    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
    6.
    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
    8.
    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。