The Possibilities of Using CdTe as a Gamma Spectrometer

Photopeaks have been resolved from monoenergetic gammas within the 122 to 840 keV range using 40 mm3 surface barrier CdTe detectors operated at room temperature and under less than full collection conditions. Presently available CdTe exhibits heavy charge trapping and the gamma spectra reflect the effect of trapping and detrapping under changes of temperature, bias, and clipping time.