Disclosed herein is a system for fast gain regulation in a gamma-ray spectroscopy instrument. The system includes a detector configured to generate a signal indicative of energy arriving at the detector, and a processor configured to determine one or more system performance indicators. The system also includes a controller configured to compute a first gain correction term based on one of more system performance indicators and change the device gain based on the computed first gain correction term.

A gamma ray scintillation spectrometer is disclosed in which an inorganic scintillation crystal has a channel extending therethrough for receiving a sample into, and disposing a sample out of, the scintillation crystal. The spectrometer further includes a photomultiplier tube optically coupled to the scintillation crystal to detect photons generated by the scintillation crystal. A system and a method for using the gamma ray scintillation spectrometer are also provided.

An apparatus for measuring radiation includes a plurality of detectors (2), each detector (2) including: a scintillating material (4) for emitting light in response to incident radiation (6), and a photodetector (8) for receiving light emitted by the scintillating material (4) and outputting an electrical pulse in response to light received from the scintillating material (4), wherein a parameter characterising the electrical pulse is related to an energy associated with the incident radiation (6); and a power supply (10) for supplying power to a plurality of the photodetectors (8). The apparatus reduces the volume of hardware to be transported to the measurement location and therefore provides particular advantages for scanning pipelines and other structures located deep underwater.

An apparatus, method and computer program for operating an apparatus. The apparatus comprises: a scintillator and an array of photodetectors; the scintillator configured to be rotatable around the periphery of a computed tomography scanner, the scintillator configured to receive X-rays incident on the scintillator, convert the received X-rays to visible light and transmit the visible light towards a corresponding photodetector of the array of photodetectors; and the array of photodetectors fixed around the periphery of the computed tomography scanner, each of the photodetectors in the array of photodetectors configured to output an electrical signal in response to detecting the visible light received from the scintillator.

A method and an apparatus for distinguishing radionuclides are disclosed. The method comprises the steps of: receiving energy generated in one or more radioactive elements; applying energy as a weight for each channel to spectrum of the received energy; and distinguishing the one or more radioactive elements on the basis of the spectrum of the spectrum to which the weight is applied. A radioactive element having an energy value corresponding to a peak value of the spectrum of the energy to which the weight is applied, as an energy value of a Compton edge, is distinguished as the one or more radioactive elements. According to the present invention, it is possible to more accurately monitor radiation even while using a plastic scintillator, and further to improve energy resolution of a plastic scintillator.

A radiographic imaging apparatus includes a sensor board including a flexible substrate, and a plurality of pixels that are provided on a first surface of the substrate to accumulate electrical charges generated in accordance with light converted from radiation. Additionally, the radiographic imaging apparatus includes flexible cables having one ends electrically connected to the sensor board and the other ends provided with connectors, and flexible cables on which signal processing circuit parts are mounted and which are connected electrically to the cables by the one ends thereof being electrically connected to the connectors. Additionally, the radiographic imaging apparatus includes flexible cables having one ends electrically connected to the sensor board and the other ends provided with connectors, and flexible cables on which drive circuit parts are mounted and which are connected electrically to the cables by the one ends thereof being electrically connected to the connectors.

A method and system to identify an isotope provided in a medium to be characterized by an instrumentation system. The identification method includes: measuring at least one reference spectrum for at least two reference isotopes; defining measurement windows for each reference isotope; measuring a measured spectrum on the medium to be characterized; for each reference isotope, calculating for each of the measurement windows a deviation value representing the deviation between the measured spectrum and that of the reference isotope in the measurement window; for each reference isotope, determining from the calculated deviation values a dissimilarity coefficient; and identifying the isotope from the determined dissimilarity coefficients.

An apparatus for detecting radiation energy includes a first comparator coupled to a first voltage source applying a first threshold voltage to the first comparator. The apparatus includes a second comparator, a radiation detector, Analog-to-Digital Converter (ADC), and control circuitry. The second comparator is coupled to a second voltage source applying a second threshold voltage to the second comparator. The radiation detector is coupled to the first and second comparators. The ADC has a first input coupled to the detector, and is responsive to a second input for placing it in a low-power mode. The control circuitry is coupled to outputs of the comparators and the ADC, and the control circuitry temporarily switches the ADC from the low-power mode to a normal operating mode to perform a peak measurement of detected radiation energy, and determine the first and second threshold voltages based on the peak measurement.

An apparatus for detecting radiation energy includes a first comparator coupled to a first voltage source applying a first threshold voltage to the first comparator. The apparatus includes a second comparator, a radiation detector, Analog-to-Digital Converter (ADC), and control circuitry. The second comparator is coupled to a second voltage source applying a second threshold voltage to the second comparator. The radiation detector is coupled to the first and second comparators. The ADC has a first input coupled to the detector, and is responsive to a second input for placing it in a low-power mode. The control circuitry is coupled to outputs of the comparators and the ADC, and the control circuitry temporarily switches the ADC from the low-power mode to a normal operating mode to perform a peak measurement of detected radiation energy, and determine the first and second threshold voltages based on the peak measurement.

A radiation detection device includes a scintillator group which includes a plurality of scintillators; an optical detection unit which is provided in each scintillator and detects scintillation light; and a control unit which corrects a detection signal based on a value of energy of a radiation and a plurality of features included in a histogram based on the acquired detection signal.