Energy Resolution Improvement of a CdTe Detector By Means of a Timing Technique

By means of a timing technique, in this work, the energy resolution of a CdTe detector was improved by using the 59.5 keV-energy gamma peak of an 241Am radioisotope. First, this gamma peak was recorded in a multichannel analyzer without timing process in the experiment. Then, the timing discrimination method was applied on this peak to eliminate the non-peak radiations such as background, scattered and backscattered etc. together with the electronic noise component. Energy resolution of the detector was calculated before and after the timing method. Finally, obtained results were compared. It was concluded from the obtained results thatbetter signal-to-noise ratio (SNR), which is an important factor for medical imaging, would be able to have through the timing technique without cooling the detector. This method was successful on the improvement of the energy resolution of the detector.