ANALYSIS OF RADIATION DAMAGED HPGE DETECTORS WITH A NEW ALGORITHM

After being irradiated by high-energy protons, the energy resolution o f HPGe detectors degrade extensively. Resulting line shapes depend mos tly on detector geometry and doping type. To improve the analysis of m easured gamma-ray spectra of HPGe detectors, new algorithms were devel oped. Since trapping in radiation damaged HPGe detectors is predominan tly hole trapping, the full energy peak is the integration of absorpti on events produced within the detector at various distances from the p ositive contact. Implementing that information into fit algorithms, pe aks produced by detectors irradiated with 6 . 10(8) protons/cm(2) coul d be analyzed. The tailing structure at the low energy side was includ ed in the algorithm. Analog algorithms were successfully applied to da maged coaxial detectors of either doping type. Using these algorithms, it was possible to evaluate transients in damaged detectors after hav ing been exposed to room temperature. Also, the development of tail br oadening could be examined.