Abstract:
This device for detecting electromagnetic radiation, in particular X-ray or γ-rays, includes: a sensing layer consisting of at least one material capable of interacting with said electromagnetic radiation to be detected, in order to liberate mobile charge carriers, whereof the movement generates an electric current; a substrate provided with a plurality of elementary collectors of the charge carriers thus liberated, said elementary collectors being distributed discretely; a transfer layer suitable for transferring the charge carriers liberated by the sensing layer at the elementary collectors, said layer being connected to the sensing layer; and an insulating adhesive mating layer, suitable for mating the plurality of elementary collectors and the transfer layer.
Abstract:
A method correcting a measured spectrum of X radiation, according to a number of channels Nc, each channel i corresponding to an energy range between Ei and Ei+ΔEi, including: determining function δti,j(k) determining size of temporal deviation Δt interval separating two interactions with energy Ei and Ej, stacking of which leads to a detected energy value Ek; determining, from the function δti,j(k), probability function Pi,j(k) that an event counted in a channel k corresponds to a stack of two interactions, respectively of energies Ei and Ej; determining, from the probability function Pi,j(k), a stack spectrum as a part of the measured spectrum that corresponds only to the stacks alone; and calculating or estimating at least a first corrected spectrum, by the difference between the measured spectrum and the stack spectrum.
Abstract:
This device for detecting electromagnetic radiation, in particular X-ray or γ-rays, includes: a sensing layer consisting of at least one material capable of interacting with said electromagnetic radiation to be detected, in order to liberate mobile charge carriers, whereof the movement generates an electric current; a substrate provided with a plurality of elementary collectors of the charge carriers thus liberated, said elementary collectors being distributed discretely; a transfer layer suitable for transferring the charge carriers liberated by the sensing layer at the elementary collectors, said layer being connected to the sensing layer; and an insulating adhesive mating layer, suitable for mating the plurality of elementary collectors and the transfer layer.
Abstract:
A thermoadhesive tape comprises weft and warp wherein at least one between the weft and warp comprises at least one filament of thermoadhesive fibre.
Abstract:
A method correcting a measured spectrum of X radiation, according to a number of channels Nc, each channel i corresponding to an energy range between Ei and Ei+ΔEi, including: determining function δti,j(k) determining size of temporal deviation Δt interval separating two interactions with energy Ei and Ej, stacking of which leads to a detected energy value Ek; determining, from the function δti,j(k), probability function Pi,j(k) that an event counted in a channel k corresponds to a stack of two interactions, respectively of energies Ei and Ej; determining, from the probability function Pi,j(k), a stack spectrum as a part of the measured spectrum that corresponds only to the stacks alone; and calculating or estimating at least a first corrected spectrum, by the difference between the measured spectrum and the stack spectrum.
Abstract:
A device that processes a signal delivered by a radiation detector includes a circuit that delivers a voltage pulse whose amplitude is proportional to a charge detected by the radiation detector. The device also includes an analog to digital converter to digitize the voltage pulse at a given sampling frequency and delivers a corresponding digital signal to a processing circuit. The processing circuit reads the digital signal, computes a temporal variation rate of the digital signal and captures the digital signal when the temporal variation reaches a threshold.
Abstract:
The invention concerns a device for processing a signal delivered by a radiation detector (1), the device comprising a circuit (2, 3) able to deliver a voltage pulse whereof the amplitude is proportional to a charge detected by the detector (1) and an analog/digital converter (ADC) that digitizes the voltage pulse at a given sampling frequency and delivers a digital signal, characterized in that it comprises, downstream of the analog/digital converter (ADC), a processing circuit (5) that comprises: a reading unit for reading the digital signal (S (t)) delivered by the analog/digital converter (ADC), a computing unit that computes a temporal variation rate of the read digital signals, and a circuit able to capture the read digital signals whereof the temporal variation reaches a predetermined threshold.
Abstract:
A thermoadhesive tape particularly but not exclusively intended for the manufacture of stitch-free items, like for example garments and clothing accessories, comprises weft and warp and at least one filament of thermoadhesive fibre woven with the weft and warp.
Abstract:
This invention relates to an ionizing radiation detection device including a detector (1) of semi-conductor material intended to be biased thanks to electrodes (3.1, 3.2), among which reading electrodes (3.2) connected to a reading circuit (2) process signals they provide to reject those causing a poor spectrometric response, that is those affected by an induction share and possibly those affected by a charge or electronic noise share.
Abstract:
An X-gamma dosimeter responsive to low energy values includes X and gamma radiation detectors responding differently in relation to the dose absorbed at low energy. One detector overestimates the dose absorbed with regard to human tissues, while the other detector underestimates the absorbed dose. An electronic processor combines signals supplied by both detectors, the combination being optimized so as to report accurately the dosimetric quantity within a large energy range.