Direct mathematical method for calculating full-energy peak efficiency and coincidence corrections of HPGe detectors for extended sources

摘要

We introduce a direct analytical mathematical method to determine full-energy peak (photopeak) efficiency and coincidence corrections of hyper pure germanium (HPGe) detectors for extended sources. Extensive experimental readings have been carried out. The comparisons between calculations and extended source experiments showed that the relative errors were mostly less than ±3% in the region of photon energies from 60 to 1836 keV.