公开(公告)号：EP1648019A4

公开(公告)日：2009-05-06

申请号：EP04748960

申请日：2004-07-06

Applicant: BUDKER INST OF NUCLEAR PHYSICS

Inventor： BARU SEMEN EFIMOVICH ,  GROSHEV VLADIMIR ROMANOVICH ,  LEONOV VICTOR VASILYEVICH ,  POROSEV VYACHESLAV VICTOROVICH ,  SAVINOV GENNADIY ALEKSEEVICH

IPC: G01T5/12 ,  H01J47/04 ,  H01J47/02

CPC classification number: H01J47/04

Abstract: The invention relates to a scanning radiographic device consisting of an ionising radiation source, a collimator (10) in the form of a longitudinal slit for forming a flat radiation beam (3) and a device for recording the radiation ray passed through a studied object. Said radiation ray recording device comprises data read out, processing and output electronic units (12) and at least one ionising particle detector. A flat capacitor provided with a nonslotted anode (7) and a cut into strips cathode (8) is arranged in the detector body (6) where the radiation passed through the studied object comes up. The length of the strips is selected according to a condition that X-radiation is entirely absorbed by gas. An individual accumulating capacitor whose charge is read out by an electronic unit is connected to each strip, thereby enabling the device to operate in an integrated mode. Said detector is also provided with additional inserts (9, 11) which are arranged at a radiation input and at the end along the ray trace, thereby reducing X-ray losses, setting a required resolution in the scanning direction and reducing requirements to a permissible vibration level and a calibration of the scanning system components

公开(公告)号：EP1648019A1

公开(公告)日：2006-04-19

申请号：EP04748960.4

申请日：2004-07-06

Applicant: THE BUDKER INSTITUTE OF NUCLEAR PHYSICS RUSSIAN ACADEMY OF SCIENCES SIBERIAN BRANCH

Inventor： BARU, Semen Efimovich ,  GROSHEV, Vladimir Romanovich ,  LEONOV, Victor Vasilyevich ,  POROSEV, Vyacheslav Victorovich ,  SAVINOV, Gennadiy Alekseevich

IPC: H01J47/02

CPC classification number: H01J47/04

Abstract: Die Erfindung betrifft eine abtastende, röntgenografische Anlage, die eine lonisierungsstrahlungsquelle, einen Kollimator in Form eines länglichen Spalts zur Erzeugung eines flachen Strahlungsgangs und ein Registrierungsgerät des Strahlungsbündels, das durch das zu untersuchende Objekt hindurchgeht, mit einer Ablese-, Datenverarbeitungs- und Ausgabeelektronik und mindestens einen Detektor der ionisierenden Teilchen umfasst. Im Detektorgehäuse, in das die durch das zu untersuchende Objekt hindurchgehende Strahlung gelangt, ist ein ebener Kondensator mit einer Vollanode und einer in Streifen unterteilten Kathode angeordnet. Die Streifenlänge ist so ausgelegt, dass eine vollständige Absorption der lonisierungsstrahlung im Gas gewährleistet ist. An jedem Streifen ist ein Speicherkondensator angeschlossen, dessen Ladung von der Elektronik abgelesen wird. Im Detektor sind ein dielektrisches Mittel und ein zusätzlicher Körper am Eingang der Strahlung bzw. am Ende des Strahlungspfads vorgesehen, wodurch die Verluste der Ionisierungsstrahlung vermindert werden, die erforderliche Auflösung in Abtastrichtung gewährleistet wird und Anforderungen an das zulässige Vibrationsniveau und der Justierung einzelner Teile der abtastenden Anlage vermindert werden.

公开(公告)号：EP0395945B1

公开(公告)日：1994-07-06

申请号：EP90107466.6

申请日：1990-04-19

Applicant: HAMAMATSU PHOTONICS K.K.

Inventor： Tanaka, Eiichi, c/o Hamamatsu Photonics K.K. ,  Hayashi, Tatsuro, c/o Hamamatsu Photonics K.K.

IPC: H01J47/02

CPC classification number: H01J47/02 ,  H01J47/04

公开(公告)号：EP0395945A3

公开(公告)日：1991-03-20

申请号：EP90107466.6

申请日：1990-04-19

Applicant: HAMAMATSU PHOTONICS K.K.

Inventor： Tanaka, Eiichi, c/o Hamamatsu Photonics K.K. ,  Hayashi, Tatsuro, c/o Hamamatsu Photonics K.K.

IPC: H01J47/02

CPC classification number: H01J47/02 ,  H01J47/04

Abstract: An ionization chamber can stably measure a weak ionizing radiation with high sensitivity. The ionization chamber comprises an electrically conductive charge collecting electrode (32) having a magnetic substance (30) or a permanent magnet; an electromagnet (34) for positioning the charge collecting electrode (32) in non-contact with the other part of the ionization chamber; a position sensor (36,38) for detecting the position of the charge collecting electrode; a circuit (40) for feedback-controlling the magnetic force of the electromagnet to maintain the charge collecting electrode at the substantially same position; and ionization current detecting circuit (42) for detecting an ionization current collected at the charge collecting electrode by ionization due to radiations applied to the ionization chamber.

公开(公告)号：KR1020090032244A

公开(公告)日：2009-04-01

申请号：KR1020070097289

申请日：2007-09-27

Applicant: 한국원자력연구원

Inventor： 박세환 ,  하장호 ,  이재형 ,  김정복 ,  김한수

IPC: G01T1/02 ,  G01T3/00

CPC classification number: H01J47/04 ,  G01T1/02

Abstract: An ionization chamber and a radiation measurement and radioactive isotope nuclide discriminating method using the ionization chamber are provided to measure radiation dose effectively and improve the accuracy of radioactive isotope nuclide discrimination by forming a coplanar anode electrode structure in the ion chamber. An ionization chamber(1) includes one coplanar anode electrode structure(10) and a cathode electrode(20). The coplanar anode electrode structure has a circular cross section and includes a first and a second electrode, wherein an insulating layer is formed lengthwise between the first and the second electrode in order to prevent electric connection between the electrode.

Abstract translation: 提供一种使用电离室的电离室和辐射测量和放射性同位素核素鉴别方法，通过在离子室中形成共面的阳极电极结构，有效地测量辐射剂量并提高放射性同位素核素鉴别的准确性。 电离室（1）包括一个共面阳极电极结构（10）和阴极电极（20）。 共面阳极电极结构具有圆形横截面并且包括第一和第二电极，其中在第一和第二电极之间纵向形成绝缘层，以防止电极之间的电连接。

公开(公告)号：US5003176A

公开(公告)日：1991-03-26

申请号：US509739

申请日：1990-04-17

Applicant: Eiichi Tanaka ,  Tatsuro Hayashi

Inventor： Eiichi Tanaka ,  Tatsuro Hayashi

IPC: G01T1/185 ,  G01T7/00 ,  H01J47/02 ,  H01J47/04

CPC classification number: H01J47/02 ,  H01J47/04

Abstract: An ionization chamber can stably measure a weak ionizing radiation with high sensitivity. The ionization chamber comprises an electrically conductive charge collecting electrode having a magnetic substance or a permanent magnet; an electromagnet for positioning the charge collecting electrode in non-contact with the other part of the ionization chamber; a position sensor for detecting the position of the charge collecting electrode; a circuit for feedback-controlling the magnetic force of the electromagnet to maintain the charge collecting electrode at the substantially same position; and ionization current detecting circuit for detecting an ionization current collected at the charge collecting electrode by ionization due to radiation applied to the ionization chamber.

公开(公告)号：US3628019A

公开(公告)日：1971-12-14

申请号：US3628019D

申请日：1969-03-13

Applicant: THOMAS P JACKSON

Inventor： JACKSON THOMAS P

IPC: H01J47/04 ,  G01T1/16

CPC classification number: H01J47/04

Abstract: A reliable low-energy dosimeter, and method of making same, which is capable of precisely measuring radiation at low-energy levels of approximately 30 Kev. and less; yet, such dosimeter is easily manufactured using conventional equipment.

公开(公告)号：US2976420A

公开(公告)日：1961-03-21

申请号：US75467058

申请日：1958-08-12

Applicant: LANDSVERK ELECTROMETER COMPANY

Inventor： LANDSVERK OLE G ,  ZENONAS GLODENIS ,  MERRINER DELBERT L

IPC: H01J47/04

CPC classification number: H01J47/04

公开(公告)号：US2866099A

公开(公告)日：1958-12-23

申请号：US55145255

申请日：1955-12-06

Applicant: PHILIPS CORP

Inventor： DESMOND COULSON ARTHUR

IPC: H01J47/04

CPC classification number: H01J47/04

公开(公告)号：USRE23997E

公开(公告)日：1955-05-10

申请号：US23997D

IPC: H01J47/04

CPC classification number: H01J47/04