A radiation imaging system includes a radiation imaging apparatus and an imaging control apparatus, the radiation imaging apparatus includes a dose detection pixel that detects a dose of radiation irradiated from a radiation source, and the imaging control apparatus controls the radiation imaging apparatus. Before radiation imaging, the imaging control apparatus specifies a position of the dose detection pixel in a region of interest for calculating a dose indicator value of a radiation image, determines a threshold according to the position of the dose detection pixel, and transmits the position of the dose detection pixel and the threshold to the radiation imaging apparatus. The radiation imaging apparatus makes a setting of the position of the dose detection pixel in the region of interest and the threshold transmitted from the imaging control apparatus, and performs imaging based on the setting.

Various aspects include methods compensating for Compton scattering effects in pixel radiation detectors. Various aspects may include determining whether gamma ray detection events occurred in two or more detector pixels within an event frame, determining whether the gamma ray detection events occurred in detector pixels within a threshold distance of each other in response to determining that gamma ray detection events occurred in two or more detector pixels within the event frame, and recording the two or more gamma ray detection events as a single gamma ray detection event having an energy equal to the sum of measured energies of the two or more gamma ray detection events located in a detector pixel having a highest measured energy in response to determining that the gamma ray detection events occurred in detector pixels within the threshold distance of each other.

Provided is a portable XRF data screening method for heavy metal contaminated soil, relating to the technical field of heavy metal contamination test. The method includes the following steps: (1) laboratory test; (2) XRF test; and (3) calculation of a recheck interval: dividing test data into four areas by a contaminant screening value X.sub.c as a horizontal line and a correlation-derived site screening value as a vertical line to calculate the recheck interval. The method is simple and efficient, and is beneficial to saving investigation costs and shortening a project cycle.

A radiation imaging system is provided. The system comprises a radiation imaging apparatus including a plurality of pixels for acquiring radiation image data and a detection unit for performing exposure control during radiation irradiation, and a radiation control apparatus configured to control a radiation source that irradiates radiation to the radiation imaging apparatus. The radiation imaging apparatus and the radiation control apparatus transmit signals that relate to exposure control by wireless communication. The radiation imaging apparatus, in a case where an irradiation stop signal indicating that radiation irradiation has been stopped is not received from the radiation control apparatus after a signal instructing to stop radiation irradiation has been transmitted to the radiation control apparatus and until a first time interval has elapsed, transmits a signal instructing to stop radiation irradiation to the radiation control apparatus again.

Methods and systems for improving a measurement recipe describing a sequence of measurements employed to characterize semiconductor structures are described herein. A measurement recipe is repeatedly updated before a queue of measurements defined by the previous measurement recipe is fully executed. In some examples, an improved measurement recipe identifies a minimum set of measurement options that increases wafer throughput while meeting measurement uncertainty requirements. In some examples, measurement recipe optimization is controlled to trade off measurement robustness and measurement time. This enables flexibility in the case of outliers and process excursions. In some examples, measurement recipe optimization is controlled to minimize any combination of measurement uncertainty, measurement time, move time, and target dose. In some examples, a measurement recipe is updated while measurement data is being collected. In some examples, a measurement recipe is updated at a site while data is collected at another site.

A radiation image imaging apparatus which generates an image from irradiated radiation, the radiation image imaging apparatus including: a communication unit which directly communicates by wireless communication with an information processing apparatus, which performs wireless communication, and receives installation setting information transmitted from the information processing apparatus to perform a predetermined setting at a time of an installation; and a hardware processor which performs the predetermined setting of the radiation image imaging apparatus in accordance with the installation setting information received by the communication unit.

A radiographic imaging apparatus and a radiation detector are provided, which are capable of sufficiently reducing the sensitivity difference between pixels even if the incident photon rate is high. A radiographic imaging apparatus includes: a radiation source for irradiating an object with radiation; a plurality of detection element modules each having a semiconductor layer that generates electrical charges depending on photon energy of the radiation, and a photon counting circuit for counting the electrical charges for each pixel; and a collimator that is disposed between the radiation source and the semiconductor layer, and has a plurality of walls forming a plurality of passage holes through which the radiation passes. A plurality of subpixels is formed on the semiconductor layer, and when one or more subpixels defined by the walls of the collimator are grouped as a macro pixel, a plurality of macro pixels arranged from each end of each of the detection element modules is smaller in size than a macro pixel other than the plurality of macro pixels arranged from the end of the detection element module.

Provided are a quantitative analysis method, a quantitative analysis program, and an X-ray fluorescence spectrometer. The quantitative analysis method includes: a step of acquiring a representative composition set to represent contents of analysis components; a step of acquiring a plurality of comparative compositions, in each of which the content of one of the analysis components of the representative composition is changed by a predetermined content; a detection intensity calculation step of calculating a detection intensity indicating an intensity of fluorescent X-rays detected under the influence of the geometry effect through use of an FP method with respect to a virtual sample having a thickness set in advance and being indicated by each of the representative composition and the comparative compositions; and a step of calculating a matrix correction coefficient for each of the analysis components based on the detection intensity.

A radiation imaging system comprising a radiation imaging apparatus configured to detect radiation emitted from a radiation source, an irradiation control apparatus configured to control the radiation source, a communication control apparatus configured to perform communication between the radiation imaging apparatus and the irradiation control apparatus, and a controller, is provided. The radiation imaging apparatus is configured to communicate with the communication control apparatus in accordance with a setting selected from a plurality of settings by the controller. The controller acquires a communication time for a predetermined communication amount between the radiation imaging apparatus and the communication control apparatus, and switches, in accordance with the communication time, the setting for communication of the radiation imaging apparatus with the communication control apparatus from a currently selected setting to another setting among the plurality of settings.

The present disclosure relates to a downhole tool that includes a first photon flux detector disposed at a first radial position about a longitudinal axis of the downhole tool that measures a first signal indicative of an x-ray flux of the x-ray photons. The downhole tool also includes a second photon flux detector disposed at a second radial position about the longitudinal axis of the downhole tool that measures a second signal indicative of the x-ray flux of the x-ray photons. Further, the downhole tool includes a controller communicatively coupled to the first photon flux detector and the second photon flux detector that determines a condition associated with the electron beam based at least in part on a relative x-ray flux from the first photon flux detector and the second photon flux detector.