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| Number | Title | Issue Date |
| 8030619 | 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... | 10/04/2011 |
| 7863578 | 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 c... | 01/04/2011 |
| 7589327 | 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 ... | 09/15/2009 |
| 7411197 | Three-dimensional, position-sensitive radiation detection Disclosed herein is a method of determining a characteristic of radiation detected by a radiation detector via a multiple-pixel event having a plurality of radiation interactions. The method includes determining a cathode-to-anode signal ratio for a selected interac... | 08/12/2008 |
| 7388201 | Radiation detector having coated nanostructure and method A radiation detector has an electron emitter that includes a coated nanostructure on a support. The nanostructure can include a plurality of nanoneedles. A nanoneedle is a shaft tapering from a base portion toward a tip portion. The tip portion has a diameter betwee... | 06/17/2008 |
| 7372277 | Method and apparatus for providing stable voltage to analytical system An electrochemical cell has two terminals. One of the terminals is connected to a pulse-width-modulated (PWM) power supply and to a voltmeter. The other terminal is connected to circuitry capable of switching between amperometric and potentiometric measurement modes... | 05/13/2008 |
| 7335892 | High energy photon detector and power source with MEMS switch An energy cell, employed as a passive energy source or a detector for sensing high energy photons, takes advantage of the differing electrical properties of metals to produce an induced electromagnetic force charge when exposed to dosages of high energy photons such... | 02/26/2008 |
| 7309992 | Gas analysis method and ionisation detector for carrying out said method Chemical analysis of impurities in buffer gas is provided at various pressures up to atmospheric. Identification of the impurities is carried out by analyzing energy of electrons releases via ionization of the impurity atoms or molecules in their collisions either w... | 12/18/2007 |
| 7302101 | Viewing a compartment Detecting video phenomena, such as fire in an aircraft cargo bay, includes receiving a plurality of video images from a plurality of sources, compensating the images to provide enhanced images, extracting features from the enhanced images, and combining the features... | 11/27/2007 |
| 7196631 | Method of utilizing existing fire alarm systems and existing smoke detectors to detect aerolized radioactive material A method of utilizing existing fire panel infrastructure to fight terrorism. The fire alarm systems ionization type smoke detectors, in addition to detecting the presence of smoke, would also detect the presence of airborne radioactive particles by effecting only a ... | 03/27/2007 |
| 7186986 | Radiation detector with converters A high efficiency radiation detector employs longitudinally extending converter elements receiving longitudinally propagating radiation to produce high-energetic electrons received by detector structures in interstitial spaces. The secondary electron generation in t... | 03/06/2007 |
| 7180977 | Scanning-based detection of ionizing radiaion for tomosynthesis A scanning-based apparatus for obtaining tomosynthesis data of an object performing a periodic movement comprises a radiation source emitting radiation around an axis of symmetry; a radiation detector comprising line detectors, each being directed towards the diverg... | 02/20/2007 |
| 7180071 | Integrated circuit having radiation sensor arrangement Integrated circuit including a circuit unit having predefined functionality and a radiation sensor arrangement connected indirectly to the circuit unit. The radiation sensor arrangement has at least one radiation-sensitive element that has at least one circuit prope... | 02/20/2007 |
| 7168660 | System for capturing and recovering free-flying objects in space Capture devices are mounted on a space platform such as a spacecraft or utility satellite. Each capture device includes a folded capture net stored in a housing, guide weights connected to the net and received in spring-loaded ejection tubes oriented at an acute ang... | 01/30/2007 |
| 7164748 | Arrangement and method for obtaining imaging data A scanning-based arrangement for obtaining imaging data of an object at high repetition rate comprises a support structure; scanning-based apparatuses fixedly arranged on the support structure and each including (i) a radiation source, and (ii) a radiation detector ... | 01/16/2007 |
| 7113321 | Optical deflection apparatus and manufacturing method thereof, optical deflection array, imaging apparatus, and image projection display apparatus A miniaturized and highly integrated optical deflection apparatus is realized in which the number of electrodes for driving the optical deflection apparatus is reduced. The optical deflection apparatus implements a sheet member that is electrically floating and plur... | 09/26/2006 |
| 7105831 | Ambient air alpha particles ionization detector An ionized alpha particle detector to directly measure alpha activity in ambient air that counts alpha pulses instead of measuring radon concentration is provided by an open-air ionization chamber, a means for collecting ions, a voltage source, a charging means and ... | 09/12/2006 |
| 7092481 | Direct conversion energy discriminating CT detector A CT detector capable of energy discrimination and direct conversion is disclosed. The detector includes multiple layers of semiconductor material with the layers having varying thicknesses. The detector is constructed to be segmented in the x-ray penetration direct... | 08/15/2006 |
| 7085502 | High sensitivity, high resolution detection of signals A system and method providing for the detection of an input signal by distributing the input signal into independent signal components that are independently amplified. Detection of an input signal comprises generating from the input signal a plurality of spatially ... | 08/01/2006 |
| 7049612 | Electron beam treatment apparatus One embodiment of the present invention is an electron beam treatment apparatus that includes: (a) an array of lamps that output radiation; (b) a support mechanism adapted to support a substrate at a treatment position above the lamps; and (c) a lamp heat shield, di... | 05/23/2006 |
| 7035378 | X-ray tube with graphite window The invention relates to X-ray vacuum tubes. To let the X-rays out of the tube, in the case of an X-ray generator tube, when the wall of the tube is made of metal, the invention provides an exit window (50) that is made of pyrolytic graphite. The window prefe... | 04/25/2006 |
| 6967485 | Automatic drive adjustment of ultraviolet lamps in photo-ionization detectors A photo-ionization detector having an adjustable drive power for a UV lamp implements a calibration operation that determines measurement signals for a series of drive power levels and based on the resulting measurement signals selects one or more drive power levels... | 11/22/2005 |
| 6924477 | Method and system for establishing the cleanliness of a device A system and method for establishing the cleanliness of a device by performing a test is described. The system includes an ion mobility spectrometer to measure target signal strengths, and to measure n2≧1 test signal strengths of a device sample. The sy... | 08/02/2005 |
| 6906329 | High resolution-3-D position sensitive detector for gamma rays A method and apparatus for determining the position of a gamma ray interaction are disclosed. A medium that emits light in response to an interaction between a gamma ray and the medium is provided. A plurality of photodetectors is used to detect the light and determ... | 06/14/2005 |
| 6891166 | Multi-layered radiation converter The invention relates to a multi-layered radiation converter, a radiation detector comprising such a converter as well as a radiation-based imaging system using such a detector. Each converter layer (32) in the radiation converter is adapted for interaction w... | 05/10/2005 |
| 6822240 | Detection of radiation and positron emission tomography A radiation detector including a chamber capable of being filled with an ionizable and scintillating substance, and a radiation entrance arranged such that radiation can enter said chamber partly for ionizing said ionizable and scintillating substance, partly for be... | 11/23/2004 |
| 6815687 | Method and system for high-speed, 3D imaging of optically-invisible radiation A high-speed, three-dimensional, gamma-ray imaging method and system as well as a detector and array of such detectors for use therein are provided which characterize radioactivity distributions in nuclear and radioactive waste and materials facilities by superimpos... | 11/09/2004 |
| 6770884 | High resolution 3-D position sensitive detector for gamma rays A method and apparatus for determining the position of a gamma ray interaction are disclosed. A medium that emits light in response to an interaction between a gamma ray and the medium is provided. A plurality of photodetectors is used to detect the light and determ... | 08/03/2004 |
| 6747278 | Radiation detector utilizing an unregulated power supply A radiation detector that utilizes an unregulated power supply as opposed to a regulated power supply, since quantitative results are not required, only an audible signal, and an unregulated power supply is less expensive than that of a regulated power supply. The r... | 06/08/2004 |
| 6734435 | Photo-ionization detector and method for continuous operation and real-time self-cleaning A photo-ionization detector (PID) including two detection units controls gas flows through the ionization chambers of the detection units for real-time self-cleaning and measurement. Operation of the PID can include flowing gas through the ionization chamber of one ... | 05/11/2004 |
| 6664545 | Gate for modulating beam of charged particles and method for making same Bradbury-Nielson gates for the modulation of beams of charged particles, particularly ion beams in mass spectrometry, have been produced with an adjustable wire spacing down to 0.075 mm or a smaller spacing. The gates are robust, they can be fabricated in... | 12/16/2003 |
| 6661013 | Device and method for two-dimensional detection of particles or electromagnetic radiation The invention concerns a device and method for two-dimensional imaging and timing of particles or electromagnetic radiation with improved pulse-pair resolution. A detector, e.g. a michrochannel plate detector with a delay-line anode with three or more con... | 12/09/2003 |
| 6509838 | Constant current flame ionization circuit In a flame ionization sensor type gas combustion control apparatus, the sensor is provided with a power supply which will increase the voltage as contamination build up occurs on the in-flame sensor electrode thereby keeping a constant sensor current and ... | 01/21/2003 |
| 6414318 | Electronic circuit The present invention relates to an electronic circuit for measuring small amounts of charge or small electrical currents. One embodiment of the present invention provides an electronic circuit for measuring current or charge that can be used with a varie... | 07/02/2002 |
| 6333506 | X-ray detector unit with solid converter 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 comprising surface ... | 12/25/2001 |
| 6278121 | Ionization chamber for radiometric measuring instruments The invention relates to an ionization chamber for radiometric measuring instruments, specially for transversal surface measurement systems, comprising a housing with filling gas therein, having at least one radiation input window and a plurality of colle... | 08/21/2001 |
| 6256373 | X-ray fluorescence instrument An x-ray fluorescence instrument for measuring the presence of lead in a sample. The lead is bombarded with gamma rays from a source thereof and in turn, emit x-rays. The x-rays are detected by a scintillation detector which emits photons that are directe... | 07/03/2001 |
| 6225633 | Photo-ionization detector for volatile gas measurement and a method for self-cleaning the same A photo-ionization detector (PID) includes an ultraviolet (UV) lamp that transmits UV light into an ionization chamber to ionize volatile gases. An ion detector in the ionization chamber includes interdigital electrodes that collect resulting ions using a... | 05/01/2001 |
| 6218668 | Coplanar interdigitated grid detector with single electrode readout The coplanar interdigitated grid technique with single electrode readout provides substantial spectral performance improvement over that of conventional full-area planar electrode detectors and over coplanar interdigitated grid detectors which measure the... | 04/17/2001 |
| 6177676 | Device and sensitive medium in measuring of a dose absorbed in an ionizing radiation field The present invention relates to a device for measuring an absorbed dose in an ionizing radiation field, and to a sensitive medium for use in an ionization chamber. The device includes a detector body (11) which is of the ionization chamber type and compr... | 01/23/2001 |
