Application of xenon gamma-ray detectors in portal monitors for detection and identification of radioactive and fissile materials

A measurement data processing method, that will allow increasing detecting sensitivity of XeGRD to gammaradioactive sources, is considered. Description of a multifunctional portal monitor provided with a xenon gamma-ray detector (XeGRD) for detection and identification of radioactive and fissile materials is presented. Analysis of calibration and test results of the XeGRD included in the real portal monitor is presented. It is shown that the xenon gamma-ray spectrometer can be successfully used in portal monitors for detecting as well as for identification of various radio-nuclides.