Systems and methods for detecting Compton scatter are provided. The system includes a first detector configured to detect incident radiation and output a first detector signal; more than one second detectors surrounding the first detector and configured to detect incident radiation scattered by the first detector, wherein each of the second detectors output a second detector signal, and wherein a signal decay time of the first detector signal differs from the signal decay time of the second detector signals; and a digitizer configured to receive a single input consisting of output signals from each of the first detector and the plurality of second detectors, wherein the digitizer is further configured to simultaneously digitize the signals to produce a digitized output waveform, and wherein a shape of the output waveform is indicative of a presence or an absence of a Compton scatter signal. The systems and methods are also configured to detect pulse pileup, with or without second detectors.

A system for identifying anomalous nuclear radioactive sources can include: a radiation detector configured to collect spectra data corresponding to a radioactive source; a multi-channel analyzer configured to convert the collected spectra data to at least one two-dimensional (2D) image; and a neuromorphic architecture that includes a plurality of neurons configured to detect a radioactive anomaly based on the at least one 2D image.

A system for identifying anomalous nuclear radioactive sources can include: a radiation detector configured to collect spectra data corresponding to a radioactive source; a multi-channel analyzer configured to convert the collected spectra data to at least one two-dimensional (2D) image; and a neuromorphic architecture that includes a plurality of neurons configured to detect a radioactive anomaly based on the at least one 2D image.

Disclosed herein is a detector, comprising: a plurality of strip pixels, wherein each of the strip pixel is configured to count numbers of radiation photons incident thereon whose energy falls in a plurality of bins, within a period of time.

A radiation dosimeter includes a first radiation detector configured to operate in a counting mode, and a second radiation detector configured to operate in a current mode. A processor is configured to calculate a first detected dose of the first radiation detector, a second detected dose of the second radiation detector, and a total dose value using the first detected dose and the second detected dose. An alarm indicates when the total dose value is above a predetermined level.

An electromagnetic radiation detector of an embodiment includes a first scintillation detector that detects incidence of electromagnetic radiation and includes a first scintillator that outputs photons in response to the incidence of electromagnetic radiation; a second scintillation detector that detects scattered electromagnetic radiation exiting from the first scintillation detector, the scattered electromagnetic radiation that occurs inside the first scintillation detector due to Compton scattering of the electromagnetic radiation; and a multi-channel analyzer that performs multi-channel analysis of a result of the detection by the first scintillation detector, the result being other than results of the detection, timing of which is considered to coincide with timing of the detection by the second scintillation detector. The second scintillation detector includes a second scintillator formed by turning scintillator powder into paste and solidifying the paste into a thick film through compression and drying.

An electromagnetic radiation detector of an embodiment includes a first scintillation detector that detects incidence of electromagnetic radiation and includes a first scintillator that outputs photons in response to the incidence of electromagnetic radiation; a second scintillation detector that detects scattered electromagnetic radiation exiting from the first scintillation detector, the scattered electromagnetic radiation that occurs inside the first scintillation detector due to Compton scattering of the electromagnetic radiation; and a multi-channel analyzer that performs multi-channel analysis of a result of the detection by the first scintillation detector, the result being other than results of the detection, timing of which is considered to coincide with timing of the detection by the second scintillation detector. The second scintillation detector includes a second scintillator formed by turning scintillator powder into paste and solidifying the paste into a thick film through compression and drying.

A system for charge sharing compensation for a photon counting detector. A plurality of comparators, each configured to generate comparator output data based on a threshold value, a plurality of energy bins, each of the plurality of energy bins coupled to one of the plurality of comparators, and a coincidence logic coupled to two or more of the plurality of comparators and configured to receive comparator output data associated with two or more of a plurality of pixels. The comparator output data for each pixel indicates when a signal associated with the pixel crosses a threshold value. The coincidence logic is configured to generate a coincidence output when the comparator output data for a first pixel is received within a predetermined time interval of the comparator output data for a second pixel. The system includes a coincidence counting bin coupled to the coincidence logic and configured to receive the coincidence output and generate count data based on the coincidence output.

The present invention concerns a sensitive field effect device (100) comprising a semiconductor channel (110), a source electrode (120) connected to said semiconductor channel (110), a drain electrode (130) connected to said semiconductor channel (110), such that said semiconductor channel (110) is interposed between said source electrode (120) and said drain electrode (130), a gate electrode (140) and a dielectric layer (150) interposed between said gate electrode (140) and said semiconductor channel (110), characterized in that said semiconductor channel (110) is a layer and is made of an amorphous oxide and in that said sensor means (170, 171, 172, 173, 174, 175, 175) are configured to change the voltage between said gate electrode (140) and said source electrode (120) upon a sensing event capable of changing their electrical state. The present invention also concerns a sensor and a method for manufacturing said field effect device (100).

The radiation imaging apparatus according to the present invention is a radiation imaging apparatus arranged to detect radiation and receive power in a non-contact manner, the radiation imaging apparatus including a control unit configured to stop at least one of the non-contact power reception of and the non-contact power supply to the radiation imaging apparatus depending on the state of the radiation imaging apparatus.