Abstract
This work introduces a modern empirical method for precise radionuclides activity level determination of bulk samples. The unique feature of this method is a practical formula, normalized using far sample-detector geometry at 20cm, of the free summing coincidence source 137 Cs. The present procedure succeeds in treating the sum peak and the solid angle of the high purity germanium (HPGe) detector efficiency as a nested value included in the macro-correction factor determination. The natural activity of a given any bulk sample can be determined as a test for this method. Standard 137 Cs, 238 U, 232 Th and 152 Eu bulk gamma-ray sources, as well as 70% HPGe gamma-X detector were used to get the empirical treatment for each strongest and recommended gamma rays of any radionuclide. A computer code was designed using the Python language to help analyze, configure, optimize and give rapid calculation analysis.
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