Abstract: An apparatus for analyzing nuclides and the concentration thereof in waste contained in a radioactive waste packaging container according to the present disclosure relates to an apparatus that has detector devices located above/under the waste packaging container and performs nuclide and concentration analysis on the waste in the packaging container by scanning the packaging container in the longitudinal direction thereof using a forward/backward driving device. In particular, upper/lower detector modules are equipped with multiple high-resolution gamma ray detectors to increase inspection efficiency, each module is designed to be driven up/down, and each detector in the module is designed to be driven left/right, thereby performing nuclide and concentration analysis on various types of packaging containers regardless of the size thereof.

Abstract: The present disclosure relates to an x-ray imaging method using a variable imaging plane projection and to an x-ray imaging device applying the same. By applying a variable imaging plane projection using at least two sets of scan data for different heights obtained while varying the height of the x-ray generator from an imaging object, it is possible to solve problems caused due to a magnification effect generated in the x-ray imaging field based on a fan-beam-type or cone-beam-type x-ray generator, thereby providing more accurate x-ray image information.

Abstract: The present invention relates to a stabilization method of a plastic scintillator-based radiation detector of the present invention, wherein the Compton edge of K-40 that exists in the spectrum of a background radiation that reacts with the plastic scintillator is converted into a peak form through a proper signal process, and the output calibration of the detector is automatically performed in real time by using the information. Thus, the output of the plastic scintillator-based radiation detector is automatically calibrated in order to thereby stabilize the output of the detector regardless of the external environmental changes.

Abstract: A hand-held portable radiation detection device, such as a radiation isotopic identification device (RIID), is integrated with a personal digital assistant device (PDA), such as a smart phone, to provide improved data processing capability and user interface. The hand-held portable radiation detection device includes a mounting unit for holding the PDA, in which at least one function of the PDA may be controlled by a plurality of buttons provided on an outer casing of the radiation detection device.