公开(公告)号：US20120213319A1

公开(公告)日：2012-08-23

申请号：US13384578

申请日：2010-08-13

Applicant: Joe Kwan ,  Qing Ji ,  Ka-Ngo Leung

Inventor： Joe Kwan ,  Qing Ji ,  Ka-Ngo Leung

IPC: G21G1/10 ,  H01J27/02

CPC classification number: H05H3/06

Abstract: An apparatus and method for fast pulsing of a neutron generator is described in which a series of electrodes are used to first extract deuterium or tritium ions from a plasma contained within an ion source, and then either accelerate or stop the flow of ions to the source, depending upon the voltage potential applied to the downstream electrodes. In one embodiment, the extraction/gating system comprises 3 electrodes, a first extraction electrode which is maintained at the same positive potential as the ion sources, a second electrode maintained at a lower potential to extract ions from the source, and a third electrode which depending on the operational mode is maintained either at the same potential as the second electrode (for beam passage) or at a potential higher than that of the first electrode (for beam blockage).

Abstract translation: 描述了用于中子发生器的快速脉冲的装置和方法，其中使用一系列电极首先从离子源中包含的等离子体中提取氘离子或氚离子，然后加速或停止离子流到源 取决于施加到下游电极的电压电位。 在一个实施例中，提取/门控系统包括3个电极，与离子源保持相同正电位的第一提取电极，保持在较低电位从源极提取离子的第二电极和第三电极， 取决于操作模式保持与第二电极（用于光束通过）相同的电位或者比第一电极的电位高（用于光束阻塞）。

公开(公告)号：US08729806B2

公开(公告)日：2014-05-20

申请号：US13014956

申请日：2011-01-27

Applicant: Joe Kwan ,  Qing Ji

Inventor： Joe Kwan ,  Qing Ji

IPC: H05B31/26

CPC classification number: H05H7/00 ,  H01J27/16 ,  H01J37/08 ,  H01J2237/0203 ,  H01J2237/0817 ,  H01J2237/31701

Abstract: A novel ion source is described having an improved lifetime. The ion source, in one embodiment, is a proton source, including an external RF antenna mounted to an RF window. To prevent backstreaming electrons formed in the beam column from striking the RF window, a back streaming electron dump is provided, which in one embodiment is formed of a cylindrical tube, open at one end to the ion source chamber and capped at its other end by a metal plug. The plug, maintained at the same electrical potential as the source, captures these backstreaming electrons, and thus prevents localized heating of the window, which due to said heating, might otherwise cause window damage.

Abstract translation: 描述了具有改善的寿命的新型离子源。 在一个实施例中，离子源是质子源，包括安装到RF窗口的外部RF天线。 为了防止在束柱中形成的电子的反向流向RF射流窗口，将提供一个反向流动的电子转储，其在一个实施例中由圆柱形管形成，其一端在离子源室处敞开，并在其另一端由 金属插头 保持在与源相同的电位的插头捕获这些回流电子，从而防止由于所述加热而导致的窗口的局部加热可能导致窗口损坏。

公开(公告)号：US09161429B2

公开(公告)日：2015-10-13

申请号：US13451475

申请日：2012-04-19

Applicant: Thomas Schenkel ,  Arun Persaud ,  Rehan Kapadia ,  Ali Javey ,  Constance Chang-Hasnain ,  Ivo Rangelow ,  Joe Kwan

Inventor： Thomas Schenkel ,  Arun Persaud ,  Rehan Kapadia ,  Ali Javey ,  Constance Chang-Hasnain ,  Ivo Rangelow ,  Joe Kwan

IPC: G21G4/02 ,  H05H3/06 ,  H05H6/00

CPC classification number: H05H3/06 ,  G21G4/02 ,  H05H6/00

Abstract: A neutron generator includes a conductive substrate comprising a plurality of conductive nanostructures with free-standing tips and a source of an atomic species to introduce the atomic species in proximity to the free-standing tips. A target placed apart from the substrate is voltage biased relative to the substrate to ionize and accelerate the ionized atomic species toward the target. The target includes an element capable of a nuclear fusion reaction with the ionized atomic species to produce a one or more neutrons as a reaction by-product.

Abstract translation: 中子发生器包括导电衬底，该导电衬底包括具有独立尖端的多个导电纳米结构和用于将原子种类引入到独立尖端附近的原子物质的源。 离开衬底的目标物体相对于衬底具有电压偏置，以将离子化的原子物质离子化并加速至目标物。 目标包括能够与电离原子物质进行核聚变反应以产生作为反应副产物的一个或多个中子的元素。

公开(公告)号：US20110226422A1

公开(公告)日：2011-09-22

申请号：US13014956

申请日：2011-01-27

Applicant: Joe Kwan ,  Qing Ji

Inventor： Joe Kwan ,  Qing Ji

IPC: H05H1/46 ,  C23F1/08

CPC classification number: H05H7/00 ,  H01J27/16 ,  H01J37/08 ,  H01J2237/0203 ,  H01J2237/0817 ,  H01J2237/31701

Abstract: A novel ion source is described having an improved lifetime. The ion source, in one embodiment, is a proton source, including an external RF antenna mounted to an RF window. To prevent backstreaming electrons formed in the beam column from striking the RF window, a back streaming electron dump is provided, which in one embodiment is formed of a cylindrical tube, open at one end to the ion source chamber and capped at its other end by a metal plug. The plug, maintained at the same electrical potential as the source, captures these backstreaming electrons, and thus prevents localized heating of the window, which due to said heating, might otherwise cause window damage.

Abstract translation: 描述了具有改善的寿命的新型离子源。 在一个实施例中，离子源是质子源，包括安装到RF窗口的外部RF天线。 为了防止在束柱中形成的电子的反向流向RF射流窗口，将提供一个反向流动的电子转储，其在一个实施例中由圆柱形管形成，其一端在离子源室处敞开，并在其另一端由 金属插头 保持在与源相同的电位的插头捕获这些回流电子，从而防止由于所述加热而导致的窗口的局部加热可能导致窗口损坏。

公开(公告)号：US20130044846A1

公开(公告)日：2013-02-21

申请号：US13451475

申请日：2012-04-19

Applicant: Thomas Schenkel ,  Arun Persaud ,  Rehan Kapadia ,  Ali Javey ,  Constance Chang-Hasnain ,  Ivo Rangelow ,  Joe Kwan

Inventor： Thomas Schenkel ,  Arun Persaud ,  Rehan Kapadia ,  Ali Javey ,  Constance Chang-Hasnain ,  Ivo Rangelow ,  Joe Kwan

IPC: G21B1/11 ,  B82B1/00

CPC classification number: H05H3/06 ,  G21G4/02 ,  H05H6/00

Abstract: A neutron generator includes a conductive substrate comprising a plurality of conductive nanostructures with free-standing tips and a source of an atomic species to introduce the atomic species in proximity to the free-standing tips. A target placed apart from the substrate is voltage biased relative to the substrate to ionize and accelerate the ionized atomic species toward the target. The target includes an element capable of a nuclear fusion reaction with the ionized atomic species to produce a one or more neutrons as a reaction by-product.

Abstract translation: 中子发生器包括导电衬底，该导电衬底包括具有独立尖端的多个导电纳米结构和用于将原子种类引入到独立尖端附近的原子物质的源。 离开衬底的目标物体相对于衬底具有电压偏置，以将离子化的原子物质离子化并加速至目标物。 目标包括能够与电离原子物质进行核聚变反应以产生作为反应副产物的一个或多个中子的元素。