Decaying source model: Alternative approach to determination of true counting rates at X and gamma ray counting systems |
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| Institution: | 1. Gümü?hane University, Faculty of Engineering and Natural Sciences, Department of Physics Engineering, Gümü?hane, Turkey;2. Karadeniz Technical University, Sciences Faculty, Department of Physics, Trabzon, Turkey;1. Department of Physics and Technology, University of Bergen, Allegaten 55, 5007 Bergen, Norway;2. Department of Medical Physics and Oncology, Haukeland University Hospital, 5021 Bergen, Norway;1. Lithosphere Fluid Research Laboratory, Department of Petrology and Geochemistry, Eötvös Loránd University, Pázmány Péter sétány 1/C, 1117, Budapest, Hungary;2. Department of Earth, Environment and Resources Sciences, University of Naples Federico II, Via Cintia snc, 80126, Naples, Italy;3. Department of Chemistry, Szent István University, Páter Károly utca 1, 2103, Gödöll?, Hungary;4. Department of Applied Chemistry, Szent István University, Villányi út 35-43, 1118, Budapest, Hungary;5. State Key Laboratory for Environmental Geochemistry, China Academy of Sciences, 550081, 99 Linchengxi Road, Guiyang, Guizhou, China;6. Institute for Earth Sciences, China University of Geosciences (Beijing), No. 29, Xueyuan Road, Haidian District, Beijing, China |
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| Abstract: | The counting systems consisting of electronic devices are used for detection of radiation due to X or gamma rays. The dead time of the counting system is based on time limitations of these electronic devices. The dead time causes counting losses. Determination of counting rate losses in quantitative and qualitative analysis become a vital step for correction of analysis. Therefore, compensating for counting rate losses is of great importance. These counting rate losses are due to piled up reject time, paralyzable or non-paralyzable system dead time or a combination of these mechanisms. Paralyzable and non-paralyzable models are well-known and frequently used for correction of counting rate losses dependent on the system dead time. However, these two models do not provide enough correction at medium and high counting rates. Therefore, the new models for corrections of counting rate losses are needed. For this reason, both an alternative approach is proposed and a simulation program is coded for counting rate losses in this study. A good agreement is obtained between theoretical model and simulation program. |
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| Keywords: | Decaying source model Counting rate Dead time Analog digital converter conversion time Peaking time Minimum resolving time |
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