公开(公告)号：EP0811157A4

公开(公告)日：2005-06-01

申请号：EP96903792

申请日：1996-01-31

Applicant: MILLER THOMAS GILL

Inventor： MILLER THOMAS GILL

IPC: G01N23/04 ,  G01N23/09 ,  G01T3/06 ,  G01T5/08 ,  G01V5/00 ,  G01N23/10

CPC classification number: G01V5/0016 ,  G01N23/04 ,  G01N23/09 ,  G01T1/201 ,  G01T3/06

Abstract: A contraband detection system (18) using a single, cone shaped neutron beam determines substances concealed in a sample object by developing total neutron cross section spectra for a plurality of elements, including carbon, nitrogen, oxygen, hydrogen and other potential contraband-indicating elements. A processor (26) performs a contraband determination classification based on the neutron total cross section spectra for the plurality of elements, including hydrogen and elements which do not have peaks in the energy range of interest. The contraband detection system (18) includes a neutron source (20) for producing a pulsed, cone shaped beam of fast white neutrons; a spatial neutron detection array (40); a conveyor system (28) for situating a sample object (29) between the source (20) and the detection array (40); a spectra analysis system (24) for determining the neutron total cross section spectra of elements located in the sample object; and the processor (26). The neutron source (20) produces a pulsed beam (36) of fast white neutrons having a sufficient energy range whereby removal of neutrons from the beam caused by the presence of a plurality of contraband-indicating elements can be determined. Various techniques of making contraband classification determinations are also disclosed.

公开(公告)号：EP1277068A1

公开(公告)日：2003-01-22

申请号：EP01971453.4

申请日：2001-04-24

Applicant: Dimason

Inventor： JOUBERT, Henri

IPC: G01T5/08

CPC classification number: G01T1/201

Abstract: The invention concerns a device for collecting ionizing radiation (1) comprising a scintillating optical fibre (4) housed in an opaque sheath, provided with one first end (7) for receiving ionizing radiation and a second end (14), and designed to convert into light signals the ionizing radiation received through its first end and deliver said signals at its second end: It further comprises filtering means (9) placed at the first end (10) of the sheath (3) designed to inhibit access by gamma type (η) ionizing rays and photons (ξ) to the first end (7) of the scintillating fibre (4), and at the second end (14) of the scintillating fibre (4), first connection means (16) designed to be connected to light guiding means (2) for coupling the second end (14) of the fibre to the end (17) of a light guide (18) of the light guiding means (18).

公开(公告)号：EP0983521A1

公开(公告)日：2000-03-08

申请号：EP98925730.8

申请日：1998-05-15

Applicant: THOMSON TUBES ELECTRONIQUES

Inventor： MOY, Jean-PierreThomson-CSF, Protection & Conseil

IPC: G01T1/00 ,  G01T5/08

CPC classification number: G01T1/201 ,  G01T1/2018 ,  H04N5/32

Abstract: The invention concerns a device for measuring exposure of a solid state image sensor (1). Said detector (1) comprises a first surface (1a) exposed to an ionising radiation (R1) representing the image. It releases through another surface (1b) opposite the first (1a) an unabsorbed ionising radiation (R2). The measuring device is designed to be placed near the other surface and to be exposed to the unabsorbed ionising radiation (R2). It comprises at least one optical fibre (11) emitting a visible or nearly visible radiation, obtained by conversion in the optical fibre, towards at least a sensing device (13), the visible or nearly visible radiation representing the unabsorbed ionising radiation. The sensing device (13) generates a signal representing the image sensor exposure. The invention is in particular applicable to X-ray image sensors.

公开(公告)号：EP0608101B1

公开(公告)日：1998-11-11

申请号：EP94300337.6

申请日：1994-01-18

Applicant: HAMAMATSU PHOTONICS K.K.

Inventor： Okada, Hiroyuki, c/o Hamamatsu Photonics K.K. ,  Yamashita, Takaji, c/o Hamamatsu Photonics K.K.

IPC: G01T5/08 ,  G01T1/20 ,  G01T1/161

CPC classification number: G01T1/201 ,  G01T1/2008

公开(公告)号：EP0851242A2

公开(公告)日：1998-07-01

申请号：EP97111645.4

申请日：1997-07-09

Applicant: MITSUBISHI DENKI KABUSHIKI KAISHA

Inventor： Oka, Toru ,  Tsutaka, Yoshikasu

IPC: G01T5/08

CPC classification number: G01T1/201

Abstract: A radiation detector obtains radiation information by detecting a light pulse occurred in response to a radiation in a scintillation fiber at one end or opposite ends of the scintillation fiber. The scintillation fiber is surrounded by a scattering member which emits an electron by interaction with the radiation.

公开(公告)号：EP0710854A3

公开(公告)日：1998-03-04

申请号：EP95116449.0

申请日：1995-10-19

Applicant: EASTMAN KODAK COMPANY

Inventor： Hejazi, Shahram, c/o Eastman Kodak Company

IPC: G01T1/29

CPC classification number: G01T1/201 ,  G01T1/2018

Abstract: A direct digital x-ray imaging system includes a fiber optic scintillating plate in which aliasing and x-ray transmission problems are minimized.

公开(公告)号：EP0703469A3

公开(公告)日：1998-03-04

申请号：EP95114977.2

申请日：1995-09-22

Applicant: MITSUBISHI DENKI KABUSHIKI KAISHA

Inventor： Oka, Toru, c/o Mitsubishi Denki K.K., Sangyo ,  Ikegami, Kazunori, Mitsubishi Denki K.K., Sangyo

IPC: G01T1/29 ,  G01T1/208

CPC classification number: G01T1/201

Abstract: A distribution type detector comprises scintillation fibers (102a,102b) identical in length to each other, an optical delay fiber (103) having a refractive index substantially identical to those of cores and claddings of the scintillation fibers, photosensitive elements (104a,104b), preamplifiers (105a,105b) constant fraction discriminators (106a,106b), a time-to-pulse height converter (107), an analog-to-digital converter (108), and a multichannel pulse-height analyzer (109). A position where a radiation (101) falls on its corresponding scintillation fiber, is detected based on a difference between time intervals necessary for propagation of optical pulses produced in the corresponding scintillation fiber by the radiation. Thus, even if the length of each scintillation fiber is increased, position resolution can be kept high and a measuring circuit system can be simplified.

Abstract translation: 甲分布型检测器包括闪烁纤维（102A，102B）相同的长度彼此，以具有折射率基本相同的那些闪烁光纤的芯和包层的光学延迟光纤（103），光敏元件（104A，104B） ，前置放大器（105A，105B）恒定分数鉴别器（106A，106B），时间到脉冲高度转换器（107）分析仪模拟数字转换器（108），以及多通道脉冲高度（109）。 其中一个辐射（101），如果在其对应的闪烁光纤，是基于在由辐射对应的闪烁光纤所产生的光脉冲的传播时间间隔的必要之间的差检测出的位置。 因此，即使每个闪烁光纤的长度增加时，位置分辨率可保持高和一个测量电路系统可被简化。

公开(公告)号：EP0500798B1

公开(公告)日：1995-09-27

申请号：EP91901033.0

申请日：1990-11-09

Applicant: BOARD OF REGENTS, THE UNIVERSITY OF TEXAS SYSTEM ,  THE REGENTS OF THE UNIVERSITY OF CALIFORNIA

Inventor： FENYVES, Ervin, J. ,  ANTICH, Pietro, P. ,  ATAC, Muzaffer ,  CLINE, David, B.

IPC: G01T1/29 ,  G01T5/08

CPC classification number: G01T1/201 ,  A61B6/037 ,  G01T1/2985

Abstract: A device and method for detecting gamma rays in a diagnostic imaging system preferably utilizing fast step index scintillating fibers and photomultipliers is provided by the present invention. A plurality of scintillating fibers are formed into layers comprising substantially parallel fibers positioned lengthwise each other in each layer. Each layer is positioned parallel each adjacent layer with each layer having its respective fibers at an angle of substantially either 60 or 90° to each adjacent layer. Preferably, position sensitive photomultipliers are provided and each photomultiplier is coupled to a plurality of fibers and each fiber has at least one end coupled to a photomultiplier. Data output from each photomultiplier is collected and processed to determine spatial coordinates of the origination position of a detected gamma ray. The present invention provides a high resolution gamma ray detector having an improved signal-to-noise ratio. This improves significantly the diagnostic power of the presently used PET and SPECT systems, and greatly extends the field of their application both in medical diagnosis and research. In addition, the present invention enables use of longer-lived positron emitting radiactive isotopes than presently used in typical PET systems.

公开(公告)号：WO2015171737A1

公开(公告)日：2015-11-12

申请号：PCT/US2015/029432

申请日：2015-05-06

Applicant: BAKER HUGHES INCORPORATED

Inventor： VASILYEV, Maxim ,  ANNIYEV, Toyli ,  KHABASHESKU, Valery, N. ,  FEDEROV, Andrey ,  KORJIK, Mikhail ,  CHUBARYAN, Gregor

IPC: G01V5/04 ,  G01V5/06 ,  E21B47/00

CPC classification number: G01T3/06 ,  G01T1/201 ,  G01V5/101 ,  G01V5/107 ,  G01V5/125

Abstract: One general embodiment according to the present disclosure may be formation evaluation tool for detecting radiation in a borehole in a volume of an earth formation. The tool may include a detector including a monolithic scintillation element comprising a coherent assemblage of joined fibers, wherein the fibers are made of an optically transparent scintillation media. The fibers may be at least one of i) gamma ray responsive; and ii) neutron responsive. The coherent assemblage of fibers may be a continuous mass, may be heat-joined. The fibers may be solid. The scintillation media may comprise at least one of i) organic crystalline scintillation materials, ii) amorphous glass, and iii) nanostructured glass ceramics. The coherent assemblage of fibers may be asymmetric. The coherent assemblage of fibers may surround a further scintillation media having different scintillation characteristics than the scintillation media. The scintillation element may be azimuthally sensitive.

Abstract translation: 根据本公开的一般实施例可以是用于检测地球体积的井眼中的辐射的地层评估工具。 该工具可以包括检测器，该检测器包括包括连接纤维的相干组合的单片闪烁元件，其中所述纤维由光学透明的闪烁介质制成。 纤维可以是i）伽马射线响应性中的至少一种; 和ii）中子响应。 纤维的相干组合可以是连续的质量，可以是热连接的。 纤维可以是固体。 闪烁介质可以包括i）有机晶体闪烁材料，ii）无定形玻璃和iii）纳米结构玻璃陶瓷中的至少一种。 纤维的相干组合可能是不对称的。 纤维的相干组合可以围绕具有与闪烁介质不同的闪烁特性的另外的闪烁介质。 闪烁元件可以是方位角敏感的。

公开(公告)号：WO2015134841A1

公开(公告)日：2015-09-11

申请号：PCT/US2015/019114

申请日：2015-03-06

Applicant: BROWN UNIVERSITY

Inventor： MORSE, Theodore, F. ,  GUPTA, Rajiv ,  CRAMER, Avilash ,  BULL, Christopher ,  WALTZ, Paul

IPC: G01T1/20 ,  B82Y15/00 ,  B82Y40/00

CPC classification number: C03B37/01262 ,  B29C43/00 ,  B29C43/003 ,  B29C43/18 ,  B29C43/58 ,  B29C2043/5808 ,  B29D11/0074 ,  B29K2023/12 ,  B29K2025/06 ,  B29K2027/12 ,  B29K2077/00 ,  B29K2105/162 ,  B29K2505/02 ,  B29K2505/08 ,  B29L2011/00 ,  B82Y15/00 ,  C03B2203/40 ,  G01T1/201 ,  G02B6/08

Abstract: A method and apparatus to manufacture a coherent bundle of scintillating fibers is disclosed. In the method and apparatus, a polymer matrix of a transparent polymer and nanoparticle scintillators is placed on top of a collimated bundle having a plurality of capillaries and pressed in a pressure vessel until the polymer matrix is forced into the capillaries. Pressure is applied via an anvil on top of the polymer matrix. To prevent fracturing of the collimated bundle during pressing, back pressure is supplied to the pressure vessel via a valve, which controls a supply of high pressure gas. Alternatively, the back pressure may also be supplied by a press (and or pressure) and support to the collimated bundle is provided by a high melting point thermoplastic. Heat may be applied to the polymer matrix via the anvil to speed the pressing operation due to the viscosity of the polymer.

Abstract translation: 公开了制造闪烁纤维的相干束的方法和装置。 在该方法和装置中，将透明聚合物和纳米颗粒闪烁体的聚合物基质放置在具有多个毛细管的准直束的顶部上，并在压力容器中压制，直到聚合物基质被迫进入毛细管。 压力通过砧座施加在聚合物基体上。 为了在压制期间防止准直束的压裂，通过控制高压气体供应的阀将压力提供给压力容器。 或者，也可以通过压力（和/或压力）提供背压，并且通过高熔点热塑性塑料提供对准直束的支撑。 可以通过砧座对聚合物基质施加热量，以加速由于聚合物的粘度引起的压制操作。