期刊
APPLIED RADIATION AND ISOTOPES
卷 81, 期 -, 页码 123-127出版社
PERGAMON-ELSEVIER SCIENCE LTD
DOI: 10.1016/j.apradiso.2013.03.017
关键词
Gamma spectrometry; Background fluctuation; Activity determination; MDA
类别
资金
- Technology Agency of the Czech Republic [TA02010896]
- Ministry of the Interior of the Czech Republic [MV-25972-17/OBVV-2010]
The determination of low level activities of natural radionuclides from the uranium and thorium series by gamma-spectrometry faces the problem of proper natural background subtraction. Background fluctuation can cause differences in activity determination. Also the minimum detectable activity (MDA) of natural and artificial radionuclides can be influenced by background fluctuation. In this paper, results of the background fluctuation of shielded HPGe detectors with relative efficiency of 50-150% are presented together with the assessment of its influence on the determination of natural and artificial radionuclides. (C) 2013 Elsevier Ltd. All rights reserved.
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