FIELD: physics.
SUBSTANCE: scintillation detector for electronic and beta-radiation, having an electron decelerator, a scintillator, a photodetector and a signal processing channel, where the electron decelerator and the scintillator are in form of a single unit from an assembly of scintillation fibres, lying perpendicular to the direction of propagation of the detected radiation, and the photodetector is in form of a two-coordinate sensitive photographic recorder.
EFFECT: high accuracy of determining energy.