Ion implanted Si detector for radiometric investigations of liquids

Silicon detectors for α-radiometric investigations of liqiuds has been tested in the 239Pu labelled solution. A tendency to sorption has been studied of different structural materials of silicon semiconductor diodes as well as polystyrene - the main part of plastic scintillators. It is proved that the sorption on the surface of detectors has been immesurable, while for polystyrene the residual activity of 2-10 decays per minxcm2 has been obtained. Contact with acid causes no change in the current-voltage characteristics, whereas α-spectra result in a slight amplitude change