Class / Patent application number | Description | Number of patent applications / Date published |
250389000 | Including ionization means | 30 |
20080258072 | Detector for Ionizing Radiation - A detector for detecting ionising radiation having at least one detector arranged to be connected to a read-out arrangement for the reading-out and the evaluation of a signal from the detector. The detector has a carrier material and a layer having an active detector material applied to the carrier material, which active detector material is arranged, in the event of its receiving incident ionising radiation that is incident upon the layer, to give rise to ionisation in the active detector material in the layer. An electrical field is applied across the layer, whereby the ionisation gives rise to an electric current. The read-out arrangement is arranged to detect such that it can in this way detect the incident ionising radiation. The active detector material in the layer contains ZnO to such an extent that ionising radiation gives rise to a detectable electric current. | 10-23-2008 |
20080272307 | Radiation Detector - Devices and methods for detecting radiation are described. A detector for detecting radiation comprises a housing containing an ionisable gas, an array of anode wires extending substantially in a first plane, and arranged to be held at a first potential for attracting electrons, and at least one cathode wire spaced in a predetermined relationship from the anode wires, arranged to be held at a second, lower potential. The detector further comprises at least one additional electrode positioned adjacent a periphery of the array of anode wires, and arranged to be held at a third potential, greater than the second potential. A window for a radiation detector is described and comprising a housing containing an ionisable gas is also described. The window comprises a layer formed of an electrically conductive material forming an electrode, a layer formed of a plastic, arranged to support the layer formed of electrically conductive material, and a layer of gas impermeable material. | 11-06-2008 |
20080283763 | Method of Measuring Exposed Dose of Ionizing Radiation - A method of measuring an exposed dose of ionizing radiation, containing: (a) extracting proteins from a tissue or blood collected from a living body, and (b) determining the content of at least one of products of LyGDI protein degraded by caspase-1 and caspase-3 in the extracted proteins. | 11-20-2008 |
20080283764 | ENERGY SENSITIVE DIRECT CONVERSION RADIATION DETECTOR - An x-ray detector capable of directly converting x-ray radiation into electrical signals utilizes the radiation induced conductivity of various solid, electrically insulating materials. The detector is configured comprising one or more anodes and cathodes separated by various thicknesses of dielectric material wherein ionization occurs primarily in the electrodes of such detector structure. The radiation induced conductivity of the dielectric material can be modulated by controlling the size, orientation and composition of the electrodes and the dielectric materials as well as the electrical bias between anode and cathode. | 11-20-2008 |
20090050818 | Method for determining individual quantum absorption events in a radiation converter for converting individual quanta of ionizing radiation incident on it, program code segment for carrying out the method, device for electronic data processing, radiation converter and imaging tomography scanner - A method is disclosed for determining individual quantum absorption events in a radiation converter which counts quanta. In at least one embodiment of the method, temporally continuous analog-to-digital conversion of electrical signals generated by a quantum absorption event to a digital signal is carried out first of all by the radiation converter. The digital signal is then processed to determine the number of quanta of the underlying quantum absorption event absorbed in the radiation converter. | 02-26-2009 |
20090084973 | WATER PHANTOM WITH FIXED WATER LEVEL FOR MEASURING DOSE OF IONIZING RADIATION ABSORBED TO WATER AND THE METHOD THEREOF - A water phantom structure with fixed water level for measuring dose of ionizing radiation absorbed to water and the method thereof are disclosed, in which the water phantom structure comprises: a tank, enclosed by four wall plates and a bottom plates, all made of an isohydric material, and having 95% of its volume to be filled with a water solution; a concave lid, being a plate configured with a fillister and made of an isohydric material to be placed in the tank while floating on the water solution for settling the water level of the water solution from undulating and thus capable of acting as a reference water level; and a moving device. The aforesaid water phantom structure can be applied in operations for measuring or calibrating output radiation doses emitted from devices such as medical gamma-ray radiation devices or linear accelerators, using which the measurement will not be interfered by the undulation of water level commonly seen in those conventional water phantom since the aforesaid water phantom structure is able to provide a fixed water level by suppressing such undulation with the concave lid. | 04-02-2009 |
20100051823 | DETECTOR FOR RADIATION THERAPY - A detector device for radiation therapy comprising an array of detector cells is provided. Each detector cell comprises an electronic circuit connected to a sensor cell that generates a charge signal in response to an incident radiation hit. The electronic circuit comprises at least two discriminators and at least two analogue counters, and is adapted to substantially simultaneously perform two different measurements on the signal in order to simultaneously provide imaging and dosimetry. | 03-04-2010 |
20100059684 | RADIATION SENSOR ARRAY USING CONDUCTIVE NANOSTRUCTURES - A system may include a conductive substrate, a plurality of conductive nanostructures disposed on a first side of the conductive substrate, an insulating substrate, and a plurality of electrodes disposed on a first side of the insulating substrate. The first side of the conductive substrate faces the first side of the insulating substrate, and each of the plurality of electrodes is electrically connected to the conductive substrate. | 03-11-2010 |
20100065749 | RADIOTHERAPY APPARATUS USING TRANSMISSION TYPE DOSIMETER - A transmission type dosimeter includes electrodes configured to collect charged particles ionized with radiation, a body, in a cavity of which, the electrodes are arranged, and a lid configured to seal the cavity in the body. The lid includes a fixing frame section fixed on the body, and a transmission section formed with the fixing frame section as a unit body. The transmission section is thinner than the fixing frame section. | 03-18-2010 |
20100065750 | BURN-UP PROFILE MEASURING METHOD, BURN-UP PROFILE MEASURING APPARATUS, RADIATION SIGNAL DISTRIBUTION MEASURING APPARATUS, AND BURN-UP PROFILE MEASURING PROGRAM - An upper detector and a lower detector that face at least one side of a fuel assembly, on which neutrons are irradiated in a nuclear reactor, and detect radiation are set at a predetermined interval in an axial direction of the fuel assembly. Distributions of radiation signals are measured by the upper detector and the lower detector while the fuel assembly and the upper detector and the lower detectors are relatively moved along the axial direction of the fuel assembly. Soundness of radiation signals measured by the upper detector and the lower detector is determined in every measurement by comparing radiation signal distributions obtained by measuring the same portion in the axial direction of the fuel assembly in a multiplexed manner with the upper detector and the lower detector. Thereafter, relative burn-up is calculated by utilizing the measured radiation signals to measure a burn-up profile. According to the present invention, it is possible to measure a burn-up profile of the fuel assembly while securing reliability of a measurement result. | 03-18-2010 |
20100108901 | Device and Method For Online Quality Assurance In Hadron Therapy - A device and method for on line dosimetry monitoring of a hadron beam generated from a source of radiation and delivered to a target, the device comprising a plurality of support plates arranged in parallel in a face-to-face relation, separated from each other by gas filled gaps and perpendicularly to the central axis of said hadron beam, and forming a plurality of ionization chambers, each support plate having on a first side one or more collecting electrodes and on a second side one or more high voltage electrode, arranged in such a way that each support plate has said first side substantially opposed to said second side of another support plate. Each support plate has an opening so as to form an inner cavity for allowing the undisturbed passage of a central portion of the hadron beam delivered to said target and a peripheral region for intercepting and measuring, by means of said plurality of ionization chambers, a peripheral portion of said hadron beam. | 05-06-2010 |
20100270473 | METHOD AND CIRCUIT ARRANGEMENT FOR DETERMINING AN INTENSITY OF IONIZING RADIATION - A method is disclosed for determining the intensity of ionizing radiation using a detector with a multiplicity of direct-conversion detector elements, in particular for use in a CT system. In at least one embodiment, the method includes supplying the signal pulses to a preamplifier/signal conditioner, supplying the amplified and conditioned signal pulses to two pulse-height discriminators connected in parallel or in series, registering by a combination logic, and transmitting the registered signal pulses to a counter. In at least one embodiment, provision is made for feedback, by which, firstly, the pulse shape of the signal pulses and, secondly, the clock rate of the clocked pulse-height discriminator are set as a function of the signal frequency. Furthermore, at least one embodiment of the invention relates to a circuit arrangement for measuring signals of a direct-conversion detector, in particular for use in a CT system, by which the method according to at least one embodiment of the invention can be carried out. | 10-28-2010 |
20110284757 | APPARATUS, METHOD AND SYSTEM FOR MEASURING PROMPT GAMMA AND OTHER BEAM-INDUCED RADIATION DURING HADRON THERAPY TREATMENTS FOR DOSE AND RANGE VERIFICATION PURPOSES USING IONIZATION RADIATION DETECTION - An apparatus, method and system for measurement of radiation during or directly following hadron therapy treatment for dose and range verification purposes accomplished through measurement of prompt gamma and other beam-induced radiation. One example includes the measurement of secondary prompt gamma radiation during proton and carbon ion beam irradiation. The measurement can also be made of other beam-induced radiation results. The measurement of gamma radiation or other beam-induced radiation allows for optimization of radiation dose disposition to the target tissue, with improved sparing of surrounding critical structures and normal tissue. Adjustments to a radiation treatment may be made as needed based on actual and measured applied dosages. | 11-24-2011 |
20120104270 | Device And Method For Monitoring A Hadron Beam - The present invention relates to a device for dosimetry monitoring of a hadron beam, comprising n successive ionization chambers i obtained by a serie or stack of n+1 parallel detector plates separated from each other by a gas filled gap, each detector plates having a collecting part comprising a collecting side insulated from a bias voltage part comprising a bias voltage side and ranged in a such way that the said collecting side is facing the said bias voltage side of a subsequent detector plate or inversely, each detector plate comprising m layers L | 05-03-2012 |
20120181442 | Device And Method For Measuring An Energy Particle Beam - The present invention relates to a dosimetry device for an energy particle beam from a source and including at least two ionization chambers, each of which includes a collector electrode and a polarization electrode, said electrodes in each ionization chamber being separated by a gap including a fluid, an energy beam from a single source passing through said ionization chambers, the device being characterized in that said ionization chambers have different charge collection efficiency factors. Said calculation algorithm for the dose rate deposited by said beam is based on the measurement of an output signal in each ionization chamber of the device and on a gain factor related to a first ionization chamber, said gain factor being theoretically predetermined on the basis of said intrinsic and/or extrinsic parameters of said ionization chambers. | 07-19-2012 |
20120241635 | IRRADIATION METHOD AND DEVICE FOR PERFORMING THE METHOD - A method actuates a device for irradiating an object that has at least one target volume to be irradiated and at least one volume to be protected. The method includes defining at least one signal dose value for the volume to be protected and irradiating the object at least one of at least at times and at least in part with hadron irradiation. A dose introduced into the volume to be protected during the irradiation of the object is determined and at least one signal is emitted as soon as the introduced dose exceeds at least one signal dose value in at least one point of the volume to be protected. | 09-27-2012 |
20120241636 | APPARATUS FOR MEASURING COMPOUND USING PHOTO-IONIZATION DETECTOR - The present invention relates to an apparatus for measuring a compound using a photo-ionization detector. The apparatus comprises: an ultra violet (UV) lamp ( | 09-27-2012 |
20130105700 | AIR ION MEASURING APPARATUS | 05-02-2013 |
20130112888 | Ion chamber/beam position monitor - An ionization chamber that serves as a radiation detector/beam position monitor for beamline applications. When two chambers are paired together in a 90° rotation orientation, the device can be used for beam position monitoring, detection and recording of location of beam bunches moving within the beamline, by detecting horizontal and vertical beam position. This feature allows for ease of use as well as multiple use applications for the chambers, resulting in the need for less additional parts. | 05-09-2013 |
20130299712 | Combination Ion Gate And Modifier - A detection device including an ionization region, an ion gate comprising two electrodes, an ion modifier comprising two electrodes, a drift chamber and a collector. The ion gate and ion modifier are combined so the ion gate is one of the ion modifier electrodes. | 11-14-2013 |
20140077091 | GLASS-PANEL LITHIUM-6 NEUTRON DETECTOR - A thermal neutron detector includes a planar detector housing having two glass panels spaced apart by a gas-tight seal defining a detection chamber including an inert detection gas and lithium foils adhered to inner surfaces of the glass panel(s). The lithium foils emit alpha particles and tritons in response to incident thermal neutrons, and the inert detection gas is ionized by the particles to generate drift electrons. A planar array of detection wires is spaced apart from the lithium foils and extends outside the detection chamber. Electronic bias applies a field voltage between the wires and the lithium foils to establish a drift electric field in the detection chamber effective to attract the drift electrons to the wires and provide a large electric field near the anode wires to cause electron multiplication near the wire resulting in large numbers of electrons and positive ions for each initial electron. Detection circuitry detects electric signals in wires generated by the drift of positive ions away from the wires and interpret the electrical signals as incidence of thermal neutrons on the detector. | 03-20-2014 |
20140158896 | DOUBLE HELIX BORON-10 POWDER THERMAL NEUTRON DETECTOR - A double-helix Boron-10 powder detector having intrinsic thermal neutron detection efficiency comparable to 36″ long, 2-in diameter, 2-bar Helium-3 detectors, and which can be used to replace such detectors for use in portal monitoring, is described. An embodiment of the detector includes a metallic plate coated with Boron-10 powder for generating alpha and Lithium-7 particles responsive to neutrons impinging thereon supported by insulators affixed to at least two opposing edges; a grounded first wire wound in a helical manner around two opposing insulators; and a second wire having a smaller diameter than that of the first wire, wound in a helical manner around the same insulators and spaced apart from the first wire, the second wire being positively biased. A gas, disposed within a gas-tight container enclosing the plate, insulators and wires, and capable of stopping alpha and Lithium-7 particles and generating electrons produces a signal on the second wire which is detected and subsequently related to the number of neutrons impinging on the plate. | 06-12-2014 |
20140191134 | ION INDUCED IMPACT IONIZATION DETECTOR AND USES THEREOF - Disclosed are systems, devices and methodologies relating to an ion induced impact ionization detector and uses thereof. In certain implementations, the detector can include a dielectric layer having one or more wells. An anode layer defining apertures to accommodate the openings of the wells can be disposed on one side of the dielectric layer, and a cathode such as a solid resistive cathode can be disposed on the other side so as to provide an electric field in each of the wells. Various design parameters such as well dimensions and operating parameters such as pressure and high voltage are disclosed. In certain implementations, such an ion detector can be coupled to a low pressure gas volume to detect ionization products such as positive ions. Such a system can be configured to provide single ion counting capability. Various example applications where the ion detector can be implemented are also disclosed. | 07-10-2014 |
20140209812 | HIGH PRESSURE ION CHAMBER ENCLOSURE SUPPORT MOUNT - A radiation detection assembly includes an ionization chamber for detecting radiation. An exterior enclosure houses the ionization chamber within an interior volume. A pair of support structures support the ionization chamber with respect to the exterior enclosure. The support structures are disposed opposite each other at a surface of the ionization chamber such that the ionization chamber is symmetric with respect to an axis extending between the support structures. A method of supporting the radiation detection assembly is also provided. | 07-31-2014 |
20140217300 | DYNAMIC HIGH VOLTAGE BIAS FOR HIGH PRESSURE ION CHAMBERS - An environmental radiation monitor including a high pressure ionization chamber (HPIC) configured to produce a current signal responsive to gamma impingement. The monitor includes an electrometer electrically connected with the HPIC. The electrometer includes an electrical amplifier receiving the current signal. The electrical amplifier is configured to convert the current signal to a voltage signal indicative of gamma impingement. The monitor includes a voltage supply electrically connected to the HPIC to provide a bias voltage amount to the high pressure ionization chamber. The voltage supply is controllable to vary the bias voltage amount provided to the HPIC. The monitor includes a processor operatively connected to the electrometer to receive information indicative of gamma impingement and operatively connected to the voltage supply to control the voltage supply to vary the bias voltage amount in response to received information indicative of gamma impingement. An associated method is also provided. | 08-07-2014 |
20140246600 | RADIATION SENSITIVE DEVICES AND SYSTEMS FOR DETECTION OF RADIOACTIVE MATERIALS AND RELATED METHODS - Radiation sensitive devices include a substrate comprising a radiation sensitive material and a plurality of resonance elements coupled to the substrate. Each resonance element is configured to resonate responsive to non-ionizing incident radiation. Systems for detecting radiation from a special nuclear material include a radiation sensitive device and a sensor located remotely from the radiation sensitive device and configured to measure an output signal from the radiation sensitive device. In such systems, the radiation sensitive device includes a radiation sensitive material and a plurality of resonance elements positioned on the radiation sensitive material. Methods for detecting a presence of a special nuclear material include positioning a radiation sensitive device in a location where special nuclear materials are to be detected and remotely interrogating the radiation sensitive device with a sensor. | 09-04-2014 |
20150069254 | SAMPLE ANALYZING SYSTEM - A system, method and apparatus for injecting reactive species and ions from an ambient ionization source into an atmospheric pressure ion mobility spectrometer | 03-12-2015 |
20150090892 | RADIATION MEASUREMENT DEVICE - A radiation measurement device comprising a case which is formed of insulating material to be flat, a common electrode substrate having a common electrode which is provided at one surface and a signal electrode substrate having a plurality of signal electrodes which are provided at one surface, wherein the common electrode substrate and the signal electrode substrate are arranged parallel to the direction in which the case extends flat so as for the common electrode and the signal electrode to face each other having a gap, each signal line is connected to each of the plurality of signal electrodes, each of the signal lines is led out from a signal line leading out part which is provided at the case to outside of the case, wherein an inner surface or an outer surface of a case wall which forms the case is covered with a conductor. | 04-02-2015 |
20160116613 | X-RAY DETECTOR - The invention relates to a matrix device for measuring characteristics of an X-ray beam. The device includes a first set of detection cells of a size different from the cells of at least one second set of detection cells. Each cell corresponds to an ionization chamber including a detection electrode. The detection electrodes of all the cells have the same effective surface for collecting charges. | 04-28-2016 |
20160377761 | Active Remote Detection of Radioactivity Based on Electromagnetic Signatures - A system for the active remote detection of radioactivity from a target of interest includes a first laser source for generating an ionizing laser beam when remotely directed on a radioactive target of interest, a second laser source for generating a laser probe beam on the radioactive target of interest, and a spectrometer configured to measure the frequency modulation of the probe beam caused by the ionization from the radioactive target of interest. | 12-29-2016 |