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WO/2002/025312A1 |
A detector (9) for detection of ionizing radiation comprises a first cathode (17) and a first anode (19) between which a first voltage (U1) is applicable; an ionizable gas arranged at least partly between the first cathode and the first ...
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WO/2002/019381A1 |
A multi-detector system receives incident radiation through a subject includes a gaseous microstrip detector, which has alternating anodes and cathodes on a substrate opposite a voltage source, is positioned adjacent a semiconductor dete...
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WO/2002/001598A1 |
A microstrip plate (MS plate) having a simple and compact structure in which a signal can be read out well from a read electrode provided on the rear surface of a substrate, and a microstrip gas chamber (MSGC) comprising that plate. The ...
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WO/2002/001249A1 |
A corpuscular beam image detector which has a high sensitivity and which uses the gas amplification by pixel type electrodes capable of improving the reliability of an electrode portion. Electrons e-, as ionized in a gas by an incoming c...
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WO/2001/094977A2 |
A method of identifying radiation detected in a wall-less proportional gas counter providing a stable pulse height spectrum. The method comprises i) transforming the detected pulse height spectrum (dn/dx) in accordance with the transform...
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WO/2001/094981A1 |
The present invention relates to an apparatus (9) for detection of radiation comprising a photocathode (18) adapted to release photoelectrons in dependence on incident radiation; a radiation entrance (33) arranged such that a beam (1) of...
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WO/2001/075479A1 |
Spectrally resolved detection of ionizing radiation in a detector comprising a chamber (13) filled with an ionizable substance, a radiation entrance (33), an electron avalanche amplification means, and a read-out arrangement (29), compri...
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WO/2001/067134A1 |
A tomographic apparatus for constructing a two-dimensional image of a cut through an object comprises a source; a detector opposite to the source; means for causing relative movement between the object and the source-detector combination...
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WO/2001/059480A1 |
A detector comprises a chamber (13) filled with an ionizable substance, a first (17, 19) and a second (21) electrode arranged such that radiation (1) can enter the chamber between and parallel with the first and second electrodes and bec...
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WO/2001/050155A1 |
A method and apparatus for radiography and also a detector for detecting incident radiation. In the method and the apparatus X-rays (9) are emitted from an X-ray source (60). Said X-rays which have interfered with an object to be imaged ...
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WO/2000/077479A2 |
An X-ray beam position monitor has a first plate assembly (1, 3) for detecting the position of the X-ray beam in a horizontal plane and a second plate assembly (6, 8) for detecting the position of the X-ray beam in a vertical plane. The ...
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WO/2000/067043A1 |
A detector unit for two-dimensional detection of incoming radiation from an X-ray source, primarily for use in X-ray radiography. The unit includes a solid material structure (2) having a plurality of passages (6) extending therein and c...
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WO/2000/067292A1 |
Infrared camera for depicting an object, comprising a container with a gaseous medium which can be brought into a suitable state to absorb photons emitted or reflected in the infrared region by the object and to emit electrically charged...
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WO/2000/063948A1 |
The invention concerns a cylindrical ionization chamber comprising an anode (35) formed by a central bar in electrically conductive material and a cathode (38) in electrically conductive material enclosing said anode, both connected to t...
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WO/2000/062095A1 |
A detector (64) for detection of ionizing radiation, and an apparatus for use in planar beam radiography, comprising such a detector. The detector comprises: a chamber filled with an ionizable medium; first and second electrode arrangeme...
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WO/2000/062097A1 |
A detector (64) for detection of ionizing radiation, an apparatus for use in planar beam radiography, comprising such a detector, and a method for detecting ionizing radiation. The detector comprises: a chamber filled with an ionizable m...
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WO/2000/062094A1 |
A method for detecting ionizing radiation, a detector (64) for detection of ionizing radiation, and an apparatus for use in planar beam radiography, comprising such a detector. The detector comprises: a chamber filled with an ionizable m...
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WO/2000/062096A1 |
A detector (64) for detection of ionizing radiation, and an apparatus for use in planar beam radiography, comprising such a detector. The detector comprises: a chamber filled with an ionizable medium; first and second electrode arrangeme...
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WO/2000/049639A1 |
The invention relates to an ionization chamber for ion beams and a method for monitoring the intensity of an ion therapy beam by means of said ionization chamber. The ionization chamber comprises a housing, a beam inlet window (3) and a ...
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WO/2000/030283A1 |
The present invention relates to a gas detector that comprises two flat and parallel conductive layers (1 and 4), a resistive layer (3) as well as a gas interlayer (5) provided between the resistive layer and the second conductive layer....
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WO/2000/030150A1 |
The invention concerns a gas-filled photon detector comprising, in a gas chamber (2), a cathode (18) pierced with holes (20) and an anode (14) comprising a set of elementary anodes (12) insulated from one another. The cathode outer surfa...
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WO/1999/064891A1 |
The present invention may be used in ionising-radiation spectrometry and more precisely in the field of diagnostic medicine as an X-rays visualisation device, for example. This invention can also be used in the field of defectoscopy for ...
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WO/1999/027559A1 |
An alternating electromagnetic field in the radiofrequency range is applied in a gaseous environment (4). Free electrons produced in the gas (4), by an ionising source of radiation (5) or by interaction of a charged particle beam with a ...
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WO/1999/021211A1 |
A radiation detector in which primary electrons are released into a gas by ionizing radiations and drifted through an electric field (E) to a collecting electrode (CE) for detection. It further includes a gas electron multiplier (10, 11,...
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WO/1999/007058A1 |
According to the invention, sensors which require a high voltage supply and require little current at least for temporary periods are supplied by an blocking oscillator with a high degree of efficiency. The efficiency of said blocking os...
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WO/1998/059262A1 |
An imaging system module comprising: a pair of high density avalanche chamber converters (11, 12) each including alternate layers (15, 16) of conducting and non-conducting material and an array of holes (17) extending through the alterna...
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WO/1998/050940A2 |
A resonance ionization imaging device (RIID) and method of imaging objects using the RIID are provided. The RIID system (100) includes a RIID cell (102) containing an ionizable vapor including monoistopic atoms or molecules. The cell is ...
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WO/1998/043116A2 |
The invention relates to an ionization chamber for radiometric measuring instruments, specially for transversal surface measurement systems. Said chamber is sufficiently sensitive and meets the usual high requirements of ionization chamb...
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WO/1998/036268A1 |
A charged particle analyser comprising a source of charged particles and a charged particle detector spaced from the source and immersed with the source in an ionisable gas. The detector comprises at least one pair of electrodes which ar...
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WO/1998/024113A1 |
Infrared camera for depicting an object, comprising an objective for projecting the object on a focal plane upon which conversion means have been provided for converting photons in the infrared range emitted or reflected by the object in...
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WO/1998/014981A1 |
The invention concerns a sensor with ionising radiation gas comprising combined in a pressurised gas chamber a module (1) for absorbing ionising radiation, generating electrons, and a module (2) for amplifying these electrons by electron...
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WO/1997/029507A1 |
The application of gas-detection principles on both dual-energy detection, such as for chest radiography and mammography, and quantitative autoradiography enhances dramatically the image quality of the digital dual-energy detector with g...
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WO/1997/016747A1 |
An optical imaging system (150) includes a substrate (52) having a cavity (56) defined therein, an anode surface (68a) positioned in the bottom of the cavity (56) and a cathode (72) positioned adjacent the cavity opening. A drift electro...
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WO/1997/014173A1 |
A high-resolution position detector for high-flux ionising particle streams, including a gas chamber (2) containing planar electrodes (4, 6, 8) defining conversion (C) and amplification (A) gaps. One of the electrodes has through-holes (...
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WO/1997/011389A1 |
A gamma detector (10) comprises a sealed electrically conductive enclosure (11) defining a cavity filled with a gas, and with signal collection means (12) insulatively mounted in the cavity and positioned to substantially span the cavity...
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WO/1996/033508A1 |
Streak camera whereof the pulse converter for converting a photon pulse for detecting into an electron stream comprises a gaseous medium. A streak camera for a photon pulse in the far-infrared region is provided with a laser source to br...
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WO/1996/027140A1 |
An alpha detector (10) for application in areas of high velocity gas flows, such as smokestacks and air vents. An odd-numbered plurality of spaced apart signal collectors (13) are placed inside an enclosure, which would include smokestac...
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WO/1996/021235A1 |
A method of manufacturing a radiotransparent window. In order to achieve suitable radiation transmission, notably for long-wave X-rays, the window is made of a material containing exclusively light elements such as carbon and hydrogen. T...
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WO/1996/019738A1 |
An X-ray window for an X-ray component such as an X-ray detector. Windows of this kind must be as thin as possible so as to minimize X-ray absorption. The known material polypropylene is not available in the desired thickness of the orde...
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WO/1996/017373A1 |
An ionising radiation detector comprising a chamber (1) filled with a noble gas and provided with an internal proportional counter (2) defining, between itself and an upper wall of the chamber, an absorption region (A) in which the radia...
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WO/1995/035510A1 |
A detector for a device for measuring radioactive areas is proposed, two electrodes (1, 2) between which is applied a voltage (V). The electrodes (1, 2) are arranged on opposite surfaces (4, 5) of a support (3). The electrodes (1, 2) and...
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WO/1995/018391A1 |
The object of the invention is a method for determining the size and shape of the radiation field (11) of an X-ray machine automatically by means of a multielectrode ionization chamber (5). By means of the method relating to the inventio...
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WO/1994/025878A1 |
A radiation detector has a dual-capacitive structure comprising an array A of first capacitors (10) including discrete electrodes (13) arranged in rows and columns and a second capacitor (20). The second capacitor (20) incorporates a rad...
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WO/1994/024583A1 |
A gamma or x-ray detector (10) which independently measures the fast scintillation and the slow electron drift signals of recoil electrons produced by Compton Scattering(s) of photons, followed by photoelectron absorption, to reconstruct...
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WO/1994/022163A1 |
The present invention provides a device of gas array detectors for high energy X or gamma-rays radiography. This device comprises a plurality of gas-pressurized array ion-chamber units mounted on a frame. Each of the gas-pressurized arra...
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WO/1994/009509A1 |
The present invention concerns detectors for ionizing radiation (X-rays, gamma rays, electrons, protons, alpha particles, etc. as well as neutrons) of the gas proportional scintillation counter type. The preferred embodiment for X-ray de...
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WO/1993/022792A1 |
Neutrons pass through an object (10) to be imaged and impinge on a converter (16) generating electrons in a chamber (15) containing a gas (17); the electrons are amplified by a Townsend avalanche effect to produce photon fluxes; an inten...
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WO/1993/008484A1 |
A PET radiation detector includes a pair of amplifying gaps (3, 21) to enhance the electron yield from a TAME gas, BaF2 gamma detector, together with a gate electrode (17) to inhibit passage of charge to the detector electrodes and rever...
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WO/1993/005531A1 |
A substantially stable, substantially portable open window gas flow Geiger-Mueller type detector which is capable of monitoring ionizing radiation is described as well as a method for monitoring ionizing radiation.
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WO/1993/003495A1 |
Gas detector for ionizing radiation, especially of the beta type leading to the emission of energetic electrons by a surface. The detector includes a sealed enclosure (1) containing an ionizing electron-generating gas and at least two gr...
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