公开(公告)号：US08213575B2

公开(公告)日：2012-07-03

申请号：US12513364

申请日：2006-11-21

申请人： Tomomi Tamura ,  Takumi Kobayashi

发明人： Tomomi Tamura ,  Takumi Kobayashi

IPC分类号： H01J35/06

CPC分类号： H01J35/04 ,  H01J35/06 ,  H01J35/14 ,  H01J2235/06 ,  H01J2235/186

摘要： According to the X-ray generating apparatus of this invention, a potential corresponding to that of a housing is applied to a first electrode, closest to a cathode, of at least two intermediate electrodes arranged between the cathode and a target. Therefore, even if the first electrode with an increased thermal capacity contacts the housing, the function of the X-ray generating apparatus will never be impaired. As a result, the first electrode is not easily restricted by structure, so that the first electrode may be enlarged as a measure for heat radiation, or that the first electrode may be placed in contact with the housing. The first electrode contacting the housing determines a positional relationship of the electron gun and housing to facilitate assembly of the X-ray generating apparatus. Further, all the potentials of the cathode, intermediate electrodes (e.g. a second electrode and a third electrode) and target will have straight polarity with respect to the potential of the first electrode, which facilitates power source control.

摘要翻译： 根据本发明的X射线产生装置，将与壳体相对应的电位施加到最靠近阴极的位于阴极和靶之间的至少两个中间电极的第一电极。 因此，即使具有增加的热容量的第一电极与壳体接触，也不会损害X射线产生装置的功能。 结果，第一电极不容易受到结构的限制，从而第一电极可以作为散热的措施而被扩大，或者第一电极可以被放置成与壳体接触。 接触壳体的第一电极确定电子枪和壳体的位置关系，以便于X射线产生装置的组装。 此外，阴极，中间电极（例如第二电极和第三电极）和靶的所有电位相对于第一电极的电位具有直的极性，这有利于电源的控制。

公开(公告)号：US20120140896A1

公开(公告)日：2012-06-07

申请号：US13369678

申请日：2012-02-09

申请人： James T. Arnold ,  Steve Bandy ,  Gary Virshup

发明人： James T. Arnold ,  Steve Bandy ,  Gary Virshup

IPC分类号： H01J35/06 ,  B05D5/12

CPC分类号： H01J35/06 ,  H01J2235/06

摘要： An apparatus and method comprising a cathode structure which can be a cylindrical filament coiled in a helix or which can be constructed of a ribbon or other suitable shape. The cathode structure can be heated by passage of an electrical current, or by other means such as bombardment with energetic electrons. Selected portions of the surface of the cathode structure have an altered property with respect to the non-selected portions of the surface. In one embodiment, the altered property is a curvature. In another embodiment, the altered property is a work function. By altering the property of the selected portions of the surface, the electron beam intensity is increased, and the width is decreased.

摘要翻译： 一种包括阴极结构的装置和方法，阴极结构可以是以螺旋线圈绕的圆柱形细丝，或者可以由带状物或其他合适的形状构成。 阴极结构可以通过电流加热，或者通过其他手段例如用高能电子轰击来加热。 阴极结构的表面的选定部分相对于表面的未被选择的部分具有改变的特性。 在一个实施例中，改变的特性是曲率。 在另一个实施例中，改变的属性是工作功能。 通过改变表面的选定部分的性质，电子束强度增加，并且宽度减小。

公开(公告)号：US08031839B2

公开(公告)日：2011-10-04

申请号：US12836946

申请日：2010-07-15

申请人： Takashi Shimono

发明人： Takashi Shimono

IPC分类号： H01J35/06

CPC分类号： H01J35/06 ,  H01J35/04 ,  H01J35/16 ,  H01J35/18 ,  H01J2235/06 ,  H01J2235/163 ,  H01J2235/18

摘要： According to one embodiment, a distance from an X-ray tube central axis to an outer side surface of a cathode electron gun in a direction perpendicular to the longitudinal direction of a filament coil is made less than a distance from the X-ray tube central axis to an outer side surface of the cathode electron gun in the longitudinal direction of the filament coil, and a distance from the X-ray tube central axis to an X-ray radiation window in the direction perpendicular to the longitudinal direction of the filament coil is made less than a distance from the X-ray tube central axis to an X-ray radiation window in the longitudinal direction of the filament coil.

摘要翻译： 根据一个实施例，使得从垂直于灯丝线圈的纵向方向的方向到阴极电子枪的X射线管中心轴到外侧表面的距离小于距离X射线管中心 与阴极电子枪的长边方向的长边方向的长轴方向的距离，以及从与X线照射窗的长度方向垂直的方向与X射线管中心轴的距离 被制成小于从X射线管中心轴到X射线辐射窗沿长丝方向的距离。

公开(公告)号：US20100303203A1

公开(公告)日：2010-12-02

申请号：US12789798

申请日：2010-05-28

申请人： Philipp Bernhardt ,  Matthias Seufert

发明人： Philipp Bernhardt ,  Matthias Seufert

IPC分类号： G01N23/04 ,  H01J35/14

CPC分类号： H01J35/06 ,  H01J35/14 ,  H01J35/26 ,  H01J2235/06

摘要： A radiation source for a radiation-based image acquisition device has an electron emitter to generate a focal spot for x-ray generation at a rotating anode. An arrangement is provided to generate an asymmetrical power input profile of the focal spot parallel to the movement direction of the rotating anode.

摘要翻译： 用于基于辐射的图像采集装置的辐射源具有电子发射器，以在旋转阳极处产生用于x射线产生的焦点。 提供了一种布置以产生平行于旋转阳极移动方向的焦斑的非对称功率输入分布。

公开(公告)号：US20100278307A1

公开(公告)日：2010-11-04

申请号：US12238200

申请日：2008-09-25

申请人： Paul D. Moore ,  James Russell Boye

发明人： Paul D. Moore ,  James Russell Boye

IPC分类号： H01J35/06

CPC分类号： H01J35/06 ,  H01J2235/06

摘要： An electron emitter assembly for use in an x-ray emitting device or other electron emitter-containing device is disclosed. In one embodiment, an x-ray tube is disclosed, including a vacuum enclosure that houses both an anode having a target surface, and a cathode positioned with respect to the anode. The cathode includes an electron emitter having a plurality of substantially parallel emission surfaces that collectively emit a beam of electrons for impingement on the target anode. In one aspect, the plurality of substantially parallel emission surfaces are angled relative focusing region so as to provide a substantially uniform thermal load on the target anode. In another aspect, the electron emitter includes a plurality of cut-outs that accommodate thermal expansion in the plane of the emitter. Accommodating thermal expansion in the plane of the emitter prevents distortions to the emitter that would tend to alter the focusing of the electrons on the target anode. Providing a substantially uniform thermal load on the target anode and preventing thermal distortion of the emitter lead to higher x-ray flux and better focusing for higher quality x-ray images.

摘要翻译： 公开了一种用于x射线发射器件或其它含电子发射器的器件中的电子发射器组件。 在一个实施例中，公开了一种X射线管，其包括容纳具有目标表面的阳极和相对于阳极定位的阴极的真空外壳。 阴极包括具有多个基本上平行的发射表面的电子发射体，其共同地发射用于冲击靶阳极的电子束。 在一个方面，多个基本平行的发射表面是成角度的相对聚焦区域，以便在目标阳极上提供基本均匀的热负荷。 在另一方面，电子发射器包括适应发射器平面热膨胀的多个切口。 在发射体的平面内容纳热膨胀可防止发射体发生变形，从而改变目标阳极上电子的聚焦。 在目标阳极上提供基本均匀的热负荷，并防止发射极的热变形导致更高的x射线通量，并更好地聚焦以获得更高质量的x射线图像。

公开(公告)号：US20100067663A1

公开(公告)日：2010-03-18

申请号：US12557706

申请日：2009-09-11

申请人： Joerg Freudenberger ,  Wolfgang Kutschera ,  Gunter Roehrich ,  Karin Soeldner

发明人： Joerg Freudenberger ,  Wolfgang Kutschera ,  Gunter Roehrich ,  Karin Soeldner

IPC分类号： H01J35/06

CPC分类号： H01J35/06 ,  H01J1/16 ,  H01J35/14 ,  H01J2235/06

摘要： A cathode HAS a cathode head in which a surface emitter is arranged that emits electrons upon application of a heating voltage. The surface emitter is fashioned as a parallel surface emitter with at least two emitter surfaces spaced apart from one another, to which at least one electrically conductive cutoff electrode is fed that is galvanically separated from the parallel surface emitter. Such a cathode has a good cutoff capability.

摘要翻译： 阴极HAS是阴极头，其中布置有施加加热电压时发射电子的表面发射体。 表面发射器被形成为具有彼此间隔开的至少两个发射极表面的平行表面发射器，至少一个导电截止电极被馈送到与该平行表面发射极电流分离的至少一个导电截止电极。 这样的阴极具有良好的截止能力。

公开(公告)号：US07668293B2

公开(公告)日：2010-02-23

申请号：US12468897

申请日：2009-05-20

申请人： Peter Wraight ,  Arthur J. Becker ,  Joel L. Groves ,  Christian Stoller

发明人： Peter Wraight ,  Arthur J. Becker ,  Joel L. Groves ,  Christian Stoller

IPC分类号： G01B15/02 ,  H05G1/10

CPC分类号： H01J35/06 ,  H01J35/14 ,  H01J2235/0233 ,  H01J2235/06 ,  H01J2235/163 ,  H05G1/02 ,  H05G1/10

摘要： An apparatus and method for determining the density and other properties of a formation surrounding a borehole using a high voltage x-ray generator. One embodiment comprises a stable compact x-ray generator capable of providing radiation with energy of 250 keV and higher while operating at temperatures equal to or greater than 125° C. In another embodiment, radiation is passed from an x-ray generator into the formation; reflected radiation is detected by a short spaced radiation detector and a long spaced radiation detector. The output of these detectors is then used to determine the density of the formation. In one embodiment, a reference radiation detector monitors a filtered radiation signal. The output of this detector is used to control at least one of the acceleration voltage and beam current of the x-ray generator.

摘要翻译： 一种用于使用高压x射线发生器确定围绕钻孔的地层的密度和其它性质的装置和方法。 一个实施例包括能够在等于或大于125℃的温度下工作时能够提供250keV及更高能量的辐射的稳定的紧凑型X射线发生器。在另一个实施例中，辐射从X射线发生器传送到地层 ; 反射辐射由短间隔的辐射检测器和长间隔的辐射检测器检测。 然后使用这些检测器的输出来确定地层的密度。 在一个实施例中，参考辐射检测器监视经滤波的辐射信号。 该检测器的输出用于控制x射线发生器的加速电压和射束电流中的至少一个。

公开(公告)号：US07623629B2

公开(公告)日：2009-11-24

申请号：US11547721

申请日：2005-03-31

申请人： Yuichi Ito ,  Toru Moriike ,  Seiji Hosoya ,  Yoshihiko Dan ,  Makoto Otsuka

发明人： Yuichi Ito ,  Toru Moriike ,  Seiji Hosoya ,  Yoshihiko Dan ,  Makoto Otsuka

IPC分类号： H01J35/02 ,  H05G1/02

CPC分类号： H01J35/06 ,  H01J9/26 ,  H01J35/16 ,  H01J35/32 ,  H01J2235/023 ,  H01J2235/06 ,  H01J2235/087 ,  H01J2235/16 ,  H01J2235/186

摘要： A transmission type X-ray tube includes an electrode lead (4) holding a cathode filament (7) and a stem unit (1) to which a sealing member (5), an exhaust tube (2), and the like are attached by brazing, and an irradiation widow frame (8) having an X-ray irradiation window (9) attached by brazing.The other end side (52) of the sealing member (5) is attached to an open end (83) of the irradiation window frame (8) by welding.Thus, it is possible to obtain a high-quality transmission type X-ray tube having a long service life at a low cost.

摘要翻译： 透射型X射线管包括：保持阴极丝（7）的电极引线（4）和通过密封部件（5），排气管（2）等附着在其上的杆单元（1） 钎焊和具有通过钎焊附着的X射线照射窗（9）的照射寡妇框架（8）。 密封构件（5）的另一端（52）通过焊接附接到照射窗框架（8）的开口端（83）。 因此，可以以低成本获得具有长使用寿命的高质量透射型X射线管。

公开(公告)号：US07609815B2

公开(公告)日：2009-10-27

申请号：US11757137

申请日：2007-06-01

申请人： Ka-Ngo Leung ,  Qing Ji ,  William A. Barletta ,  Ximan Jiang ,  Lili Ji

发明人： Ka-Ngo Leung ,  Qing Ji ,  William A. Barletta ,  Ximan Jiang ,  Lili Ji

IPC分类号： H01J35/06

CPC分类号： G01N23/203 ,  B82Y10/00 ,  B82Y40/00 ,  G01V5/0008 ,  H01J3/025 ,  H01J3/04 ,  H01J27/024 ,  H01J35/00 ,  H01J37/045 ,  H01J37/077 ,  H01J37/08 ,  H01J37/3172 ,  H01J37/3174 ,  H01J37/3177 ,  H01J2235/06 ,  H01J2235/068 ,  H01J2237/0435 ,  H01J2237/061 ,  H01J2237/06366 ,  H01J2237/06375 ,  H01J2237/3171

摘要： Techniques for controllably directing beamlets to a target substrate are disclosed. The beamlets may be either positive ions or electrons. It has been shown that beamlets may be produced with a diameter of 1 μm, with inter-aperture spacings of 12 μm. An array of such beamlets, may be used for maskless lithography. By step-wise movement of the beamlets relative to the target substrate, individual devices may be directly e-beam written. Ion beams may be directly written as well. Due to the high brightness of the beamlets from extraction from a multicusp source, exposure times for lithographic exposure are thought to be minimized. Alternatively, the beamlets may be electrons striking a high Z material for X-ray production, thereafter collimated to provide patterned X-ray exposures such as those used in CAT scans. Such a device may be used for remote detection of explosives.

摘要翻译： 公开了用于将子束可控地引导到目标衬底的技术。 子束可以是正离子或电子。 已经表明，可以制造直径为1um的子束，孔径间隔为12μm。 这种子束的阵列可用于无掩模光刻。 通过子束相对于目标衬底的逐步运动，各个器件可以被直接电子束写入。 离子束也可以直接写入。 由于从多焦源提取的子束的高亮度，认为光刻曝光的曝光时间被最小化。 或者，子束可以是撞击高Z材料用于X射线产生的电子，然后准直以提供图案化的X射线曝光，例如在CAT扫描中使用的那些。 这种装置可用于远程检测炸药。

公开(公告)号：US20080273661A1

公开(公告)日：2008-11-06

申请号：US11800394

申请日：2007-05-05

申请人： Randol E. Kirk

发明人： Randol E. Kirk

IPC分类号： G21K5/08

CPC分类号： H01J35/06 ,  G21K5/08 ,  G21K5/10 ,  H01J35/08 ,  H01J35/14 ,  H01J35/16 ,  H01J2235/06 ,  H01J2235/086 ,  H01J2235/087 ,  H01J2235/163

摘要： An apparatus and method for providing uniform X-Ray irradiation to material carried in a plurality of containers. The apparatus includes an X-Ray tube providing a linear source of irradiation and also a 4pi (360 degrees) irradiation. The material to be irradiated is placed in containers suspended on a vertical carousel wheel type structure. The individual containers are mounted receive irradiation throughout the rotation of the wheel. The tube is mounted approximately at the axis or center of the wheel. In operation, the containers of material are rotated around the tube, and due to their orientation and the 4 pi irradiation from the source, each and all the containers receive a uniform irradiation for the material contained therein.

摘要翻译： 一种用于对携带在多个容器中的材料提供均匀的X射线照射的装置和方法。 该装置包括提供线性照射源的X射线管以及4pi（360度）照射。 待照射的材料放置在悬挂在垂直转盘轮型结构上的容器中。 各个容器安装在车轮旋转的过程中受到照射。 管大致安装在车轮的轴线或中心处。 在操作中，材料容器围绕管旋转，并且由于它们的取向和来自源的4Pi照射，每个和所有容器对于其中所含的材料均受到均匀的照射。