摘要:
A radiation detection device, including a detector in semi-conductor material, a first electrode, and a second electrode. The first electrode has a form of pixels, with a first pitch, on one of the sides of the detector. The device further includes a mechanism for identifying the energy of an incident photon in the detector as a function of signals coming uniquely from the second electrode.
摘要:
The present invention relates to a low- and high-energy ionizing radiation detection apparatus composed of a semiconductor material provided with a cathode, an anode and at least one grid to form a radiation detector with a very high energy resolution rate that operates at ambient temperature.
摘要:
A method for exploiting a signal provided by a detector is disclosed. For one embodiment, the time spent by at least one part of the signal above a value S0 of a first threshold is determined. The charge corresponding to the part of the signal during the time spent above the value S0 of the first threshold is determined. A new value S′0 of the first threshold as a function of the charge and the time spent above the value S0 of the first threshold is determined. The steps of determining the time spent by at least one part of the signal above a value S0 of a first threshold and determining the charge corresponding to the part of the signal during the time spent above the value S0 of the first threshold are reiterated at least once using the new value of the first threshold.
摘要:
A method for manufacturing an ionizing radiation detection device having a block of a semiconductor material adapted to undergo local separations of charges between positive and negative charges under the effect of ionizing radiation. The device including a first series of at least two collecting electrodes formed on the surface of the semiconductor block, and a second series of at least two non-collecting electrodes formed on a support and separated from the semiconductor block by an insulating layer. During processing, after forming the insulating layer on the support so as to cover the non-collecting electrodes, the block of semiconductor material bearing the collecting electrodes and the support bearing the non-collecting electrodes and the insulating layer are assembled.
摘要:
A method for reconstructing an image of a source (S) of photons from interactions of photons emitted by this source with a detector (2) of a gamma-camera, positioned behind a collimator (4), including: associating with each photon interaction with the detector, a piece of information relating to the depth in the detector, of this interaction, reconstructing an image of the source (S) of photons from said depth information in the detector.
摘要:
A method for underwater packaging of radioactive materials includes creating a vacuum in a cavity of a cleaning device to automatically cause a portion of the cleaning device to move upward to actuate the cleaning device from an open position to a closed position; mounting the cleaning device inside a safe containment area of a transportation and/or storage device; placing the transportation and/or storage device in a pool after filling the safe containment area with water; loading a radioactive material into the safe containment area; closing the transportation and/or storage device using at least one cover; extracting the transportation and/or storage device from the pool; draining the water inside the safe containment area; and creating a pressure differential in the safe containment area to dry the safe containment area, wherein the pressure differential causes the cleaning device to automatically actuate from the closed position to the open position.
摘要:
A tomograph type detection device including a plurality of detection elements arranged in a form of a ring and electrodes on each face of the elements. Each electrode includes a connector, all the connectors being located on the external periphery of the ring of detection elements.
摘要:
A tomograph type detection device including a plurality of detection elements arranged in a form of a ring and electrodes on each face of the elements. Each electrode includes a connector, all the connectors being located on the external periphery of the ring of detection elements.
摘要:
This method for optimizing the performance of a semiconductor detector intended to detect electromagnetic radiation, especially X-rays or γ rays, equipped with electrodes separately mounted on two opposite surfaces of said detector, namely a cathode and a pixelated anode respectively, involves (i) determining the signal that is representative of the sum of the charges detected by all or some of the anodes; and (ii) using the signal that is representative of said sum of the charges to establish one or more biparametric spectra as a function of this signal so as to determine any charge collection loss if charge sharing occurred on the pixelated anodes and, consequently, performing appropriate processing depending on the type of result desired.
摘要:
A method for manufacturing an ionizing radiation detection device having a block of a semiconductor material adapted to undergo local separations of charges between positive and negative charges under the effect of ionizing radiation. The device including a first series of at least two collecting electrodes formed on the surface of the semiconductor block, and a second series of at least two non-collecting electrodes formed on a support and separated from the semiconductor block by an insulating layer. During processing, after forming the insulating layer on the support so as to cover the non-collecting electrodes, the block of semiconductor material bearing the collecting electrodes and the support bearing the non-collecting electrodes and the insulating layer are assembled.