Techniques and problems of low-level gamma-ray spectrometry |
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| Affiliation: | 1. Gesellschaft für Kernspektrometrie mbH, 3557 Mölln, FRG;2. >Institut für Kernchemie, Philipps Universität, 3550 Marburg, FRG;1. Department of Physics, Faculty of Science, University of Tabuk, Tabuk, KSA, Saudi Arabia;2. Institute of Laser, Sudan University of Science and Technology (SUST), Sudan;3. Department of Radiotherapy, Vocational School of Health Services, Uskudar University, Istanbul, 34672, Turkey;4. Medical Radiation Research Center (USMERA), Uskudar University, Istanbul, 34672, Turkey;5. Department of Medical Imaging, Vocational School of Health Services, Uskudar University, İstanbul, 34672, Turkey;6. Department of Physics, Dr.BabasahebAmbedkarMarathwada University, Aurangabad, 431004, India;1. Accelerators & Ion Sources Department, Basic Nuclear Science Division, Nuclear Research Center, Atomic Energy Authority, 13759, Cairo, Egypt;2. North Carolina State University, Department of Nuclear Engineering, Raleigh, NC, 27695-7909, USA;1. Department of Physics, University of Pretoria, Private Bag X20, Hatfield, 0028, South Africa;2. Department of Scientific Laboratories - Physics, Sudan University of Science and Technology, P.O Box 407, Khartoum, Sudan |
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| Abstract: | The origin of background events from internal and external sources is reviewed and methods of passive and active shielding are presented. It is shown that the shape of the background under a peak or multiplet can be evaluated directly from the experimental data without the use of a mathematical model shape. An algorithm for the computerized sub-division of a spectrum into regions is shown and problems associated with smoothing and automatic photopeak, or full energy-peak, detection methods are discussed. A time-dependent spectral analysis is taken as an example to demonstrate the use of averaging or trend analyses in quantitative spectrometry. |
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