Anomalous deviations of the centers of gravity of the time distributions of gamma-gamma coincidences with measurement by semiconductor detectors

The deviations of the centers of gravity of the time distributions in a spectrometer of coincidences of two Ge(Li) coaxial semiconductor detectors are investigated. Anomalous deviations of the centers of gravity from a smooth curve are detected in the area of photopeaks, edges of the Compton distribution, and the back-scattering peak. The distributions of the centers of gravity of the curves of instantaneous gamma-gamma coincidences from a /sup 60/Co source in the energy range of 50-1350 keV were studied.