SU Qiong1 DIAO Lijun2 LI Guiqun2 CHENG Jianping1 1. A remarkable systemic error in calibration methods of γ spectrometer used for determining activity of 238U[J]. Nuclear techniques, 2006, (12): 941-953.
SU Qiong1 DIAO Lijun2 LI Guiqun2 CHENG Jianping1 1. A remarkable systemic error in calibration methods of γ spectrometer used for determining activity of 238U[J]. Nuclear techniques, 2006, (12): 941-953.DOI:
A remarkable systemic error which was unknown in past long time has been indicated. The error appears in the calibration methods of determining activity of 238U is used with γ-spectrometer with high resolution. When the γ-ray of 92.6 keV as the characteristic radiation from 238U is used to determine the activity of 238U in natural environment samples
the disturbing radiation produced by external excitation (or called outer sourcing X-ray radiation) is the main problem. Because the X-ray intensity is changed with many indefinite factors
it is advised that the calibration methods should be put away. As the influence of the systemic errors has been left in some past research papers
the authors suggest that the data from those papers should be cited carefully and if possible the data ought to be re-determined.