公开(公告)号：US08389941B2

公开(公告)日：2013-03-05

申请号：US12976861

申请日：2010-12-22

Applicant: Joseph Bendahan ,  Edward James Morton

Inventor： Joseph Bendahan ,  Edward James Morton

IPC: G01T1/164

CPC classification number: H01J43/30 ,  G01T1/16 ,  G01T1/167 ,  G01T1/208 ,  G01T3/06 ,  G01V5/0025 ,  G01V5/0091 ,  H01J40/04 ,  H01J43/08 ,  H01J43/18

Abstract: The present invention provides a gamma-neutron detector based on mixtures of thermal neutron absorbers that produce heavy-particle emission following thermal capture. The detector consists of one or more thin screens embedded in transparent hydrogenous light guides, which also serve as a neutron moderator. The emitted particles interact with the scintillator screen and produce a high light output, which is collected by the light guides into a photomultiplier tube and produces a signal from which the neutrons are counted. Simultaneous gamma-ray detection is provided by replacing the light guide material with a plastic scintillator. The plastic scintillator serves as the gamma-ray detector, moderator and light guide. The neutrons and gamma-ray events are separated employing Pulse-Shape Discrimination (PSD). The detector can be used in several scanning configurations including portal, drive-through, drive-by, handheld and backpack, etc.

Abstract translation: 本发明提供了一种基于热中子吸收剂的混合物的γ中子检测器，其在热捕获之后产生重粒子发射。 检测器由一个或多个嵌入在透明氢光导中的薄屏幕组成，也可作为中子调节剂。 发射的颗粒与闪烁体屏幕相互作用并产生高光输出，该光输出由光导收集到光电倍增管中并产生中子被计数的信号。 通过用塑料闪烁体代替导光材料来提供同时的γ射线检测。 塑料闪烁体用作γ射线检测器，调节剂和光导。 使用脉冲形状识别（PSD）分离中子和γ射线事件。 检测器可用于多种扫描配置，包括门禁，驱动器，驱动器，手持和背包等。

公开(公告)号：US07977878B2

公开(公告)日：2011-07-12

申请号：US10589602

申请日：2005-02-16

Applicant: Hiroyuki Kyushima ,  Hideki Shimoi ,  Akihiro Kageyama ,  Keisuke Inoue ,  Masuo Ito

Inventor： Hiroyuki Kyushima ,  Hideki Shimoi ,  Akihiro Kageyama ,  Keisuke Inoue ,  Masuo Ito

IPC: H01J43/20 ,  H01J43/26

CPC classification number: H01J43/08 ,  H01J9/26 ,  H01J43/04 ,  H01J43/24

Abstract: The present invention relates to a photomultiplier having a structure for making it possible to easily realize high detection accuracy and fine processing, and a method of manufacturing the same. The photomultiplier comprises an enclosure having an inside kept in a vacuum state, whereas a photocathode emitting electrons in response to incident light, an electron multiplier section multiplying in a cascading manner the electron emitted from the photocathode, and an anode for taking out a secondary electron generated in the electron multiplier section are arranged in the enclosure. A part of the enclosure is constructed by a glass substrate having a flat part, whereas each of the electron multiplier section and anode is two-dimensionally arranged on the flat part in the glass substrate.

Abstract translation: 本发明涉及具有能够容易地实现高检测精度和精细处理的结构的光电倍增管及其制造方法。 光电倍增管包括具有内部保持在真空状态的外壳，而响应于入射光发射电子的光电阴极，电子倍增器级联从光电阴极发射的电子和用于取出二次电子的阳极 在电子倍增器部分中产生的电极被布置在外壳中。 外壳的一部分由具有平坦部分的玻璃基板构成，而电子倍增器部分和阳极中的每一个二维地布置在玻璃基板的平坦部分上。

公开(公告)号：US20040094694A1

公开(公告)日：2004-05-20

申请号：US10704695

申请日：2003-11-12

Applicant: Hamamatsu PHOTONICS K.K.

Inventor： Yasuharu Negi ,  Yasuyuki Egawa ,  Toru Hirohata ,  Minoru Niigaki

IPC: H01J040/14

CPC classification number: H01J43/28 ,  H01J43/08

Abstract: The invention relates to a photocathode and the like having such structure for holding a photocathode plate on a light transparent member with good reliability and workability. In the photocathode, claw portions of a holding member fixed to the light transparent member is pressed against the lower surface of a supporting plate so that a photocathode plate is sandwiched between the light transparent member and the supporting plate. Thus, the supporting plate is pressed against the photocathode plate, so that the photocathode plate is pressed against the light transparent plate by the supporting plate. This allows the photocathode plate to be held reliably by the light transparent member. This simple configuration further provides good workability in assembling.

Abstract translation: 本发明涉及一种具有这样的结构的光电阴极等，该光电阴极等具有良好的可靠性和可加工性的将光电面板保持在透光构件上。 在光电阴极中，固定在透光构件上的保持构件的爪部被压靠在支撑板的下表面上，使得光电阴极板夹在透光构件和支撑板之间。 因此，支撑板被压在光电阴极板上，使得光电阴极板通过支撑板压靠在透光板上。 这允许光电阴极板被透光构件可靠地保持。 这种简单的配置进一步提供了组装时的良好的可操作性。

公开(公告)号：US20040021417A1

公开(公告)日：2004-02-05

申请号：US10416703

申请日：2003-05-14

Inventor： Hirofumi Kan ,  Minoru Niigaki ,  Masashi Ohta ,  Yasufumi Takagi ,  Shoichi Uchiyama

IPC: H01J040/06

CPC classification number: H01J31/507 ,  H01J1/34 ,  H01J40/06 ,  H01J43/08 ,  H01J2231/50021

Abstract: Ultraviolet light incident from the side of a surface layer 5 passes through the surface layer 5 to reach an optical absorption layer 4. Light which reaches the optical absorption layer 4 is absorbed within the optical absorption layer 4, and photoelectrons are generated within the optical absorption layer 4. Photoelectrons diffuse within the optical absorption layer 4, and reach the interface between the optical absorption layer 4 and the surface layer 5. Because the energy band is curved in the vicinity of the interface between the optical absorption layer 4 and surface layer 5, the energy of the photoelectrons is larger than the electron affinity in the surface layer 5, and so photoelectrons are easily ejected to the outside. Here, the optical absorption layer 4 is formed from an Al0.3Ga0.7N layer with an Mg content concentration of not less than 2null1019 cmnull3 but not more than 1null1020 cmnull3, so that a solar-blind type semiconductor photocathode 1 with high quantum efficiency is obtained.

Abstract translation: 从表面层5侧入射的紫外线通过表层5到达光吸收层4.到达光吸收层4的光被吸收在光吸收层4内，光吸收在光吸收 光电子在光吸收层4内扩散，并到达光吸收层4和表面层5之间的界面。因为能带在光吸收层4和表面层5之间的界面附近弯曲 ，光电子的能量大于表面层5中的电子亲和力，因此光电子容易被排出到外部。 这里，光吸收层4由Mg含量浓度不小于2×10 19 cm -3但不大于1×10 20 cm -3的Al 0.3 Ga 0.7 N层形成，因此 得到具有高量子效率的太阳能型半导体光电阴极1。

公开(公告)号：US20030146698A1

公开(公告)日：2003-08-07

申请号：US10343229

申请日：2003-01-30

Inventor： Akihiko Ohtomo ,  Tsuneo Ihara ,  Kuniyoshi Mori ,  Yoshiyuki Natsume

IPC: H01J040/06

CPC classification number: H01J43/28 ,  H01J43/08 ,  H01J2231/5016

Abstract: A photocathode and an electron tube in which the photocathode plate can be securely fixed without using any adhesive. Even under the severe condition that a high vibration resistance is required or thermal stress occurs because of great temperature variation, it can be used widely for an image intensifier, a streak tube, or a photomultiplier. The photocathode plate of the photocathode is sandwiched between a faceplate and a support plate. First pins embedded in the faceplate are joined to the support plate. Therefore, the photocathode plate can be readily fixed securely to the faceplate without using any adhesive.

Abstract translation: 光电阴极和电子管，其中光电阴极板可以牢固地固定而不使用任何粘合剂。 即使在需要高抗振性或由于温度变化大而产生热应力的严酷条件下，也可以广泛用于图像增强器，条纹管或光电倍增管。 光电阴极的光电阴极板被夹在面板和支撑板之间。 嵌入在面板中的第一个销被连接到支撑板。 因此，光电阴极板可以容易地固定在面板上而不使用任何粘合剂。

公开(公告)号：US5982094A

公开(公告)日：1999-11-09

申请号：US931459

申请日：1997-09-17

Applicant: Minoru Niigaki ,  Toru Hirohata ,  Hirofumi Kan ,  Masami Yamada

Inventor： Minoru Niigaki ,  Toru Hirohata ,  Hirofumi Kan ,  Masami Yamada

IPC: H01J1/34 ,  H01J40/16 ,  H01J43/08 ,  H01J40/06

CPC classification number: H01J40/16 ,  H01J1/34 ,  H01J43/08 ,  H01J2201/3421 ,  H01J2231/50

Abstract: A photocathode includes a first layer of polycrystalline diamond or a material mainly composed of polycrystalline diamond. The first layer of polycrystalline diamond may be terminated with hydrogen, or oxygen, and a second layer of an alkali metal or compound of an alkali metal, may be provided on the first layer of polycrystalline diamond whose surface is terminated with hydrogen or oxygen. The photocathode can be use for both reflection and transmission electron tubes and can yield a quantum efficiency higher than that in a monocrystal diamond thin film.

Abstract translation: 光电阴极包括第一层多晶金刚石或主要由多晶金刚石构成的材料。 第一层多晶金刚石可以用氢或氧终止，并且第二层碱金属或碱金属化合物可以在其表面用氢或氧终止的第一多晶金刚石层上提供。 光电阴极可以用于反射和透射电子管，并且可以产生比单晶金刚石薄膜中的量子效率更高的量子效率。

公开(公告)号：US3515872A

公开(公告)日：1970-06-02

申请号：US3515872D

申请日：1968-04-29

Applicant: PHILIPS CORP

Inventor： PATZELT RUPERT ,  HALLING HORST

IPC: G01T1/20 ,  G01T1/208 ,  H01J31/50 ,  H01J43/08 ,  G01T1/204

CPC classification number: B82Y10/00 ,  G01T1/20 ,  G01T1/208 ,  H01J31/501 ,  H01J43/08

公开(公告)号：US3350594A

公开(公告)日：1967-10-31

申请号：US38566464

申请日：1964-07-28

Applicant: EMI LTD

Inventor： PETER DAVIS GORDON ,  ALFRED BENBOW HENRY

IPC: H01J29/18 ,  H01J29/28 ,  H01J31/50 ,  H01J43/08

CPC classification number: H01J43/08 ,  H01J29/18 ,  H01J29/28 ,  H01J31/50 ,  H01J2231/50063

公开(公告)号：US3119037A

公开(公告)日：1964-01-21

申请号：US9267461

申请日：1961-03-01

Applicant: EMI LTD

Inventor： ARTHUR STANLEY VINCENT

IPC: H01J43/08

CPC classification number: H01J43/08

公开(公告)号：US2790922A

公开(公告)日：1957-04-30

申请号：US34530153

申请日：1953-03-30

Applicant: RCA CORP

Inventor： JENNY DIETRICH A

IPC: H01J43/08

CPC classification number: H01J43/08