Start Topics Radiological Protection General Chapters of the Procedures' Manual General Chapters of the Procedures' Manual 01 Gamma spectrometry (former chapter IV.1)opencloseFundamentals of gamma spectrometry (PDF, 2.46 MB)γ-SPEKT/GRUNDL Gamma spectrometric determination of the activities of natural radionuclides (PDF, 1.96 MB)γ-SPEKT/NATRAD Background contributions in gamma spectrometry (PDF, 1.42 MB)γ-SPEKT/NULLEFInterferences in gamma spectrometry (PDF, 716 KB)γ-SPEKT/INTERFSummation peaks and escape peaks of selected radionuclides in gamma spectrometry (PDF, 383 KB)γ-SPEKT/SUMESC 02 Mass related activities and equivalentsopencloseDetermining the mass related activity of radionuclides (PDF, 359 KB)ÄQUIVAL/MASSAKT 03 Nuclear dataopencloseNuclear Data (PDF, 84 KB) KERNDATEN 04 Calculation proceduresopencloseCalculation of the result, the decision threshold and the detection limit Overview Procedure manuals of the federal offices overview Last updated: 05.08.2025