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http://hdl.handle.net/1942/37675
Title: | Minimal Detection Time for Localization of Radioactive Hot Spots in Low and Elevated Background Environments Using a CZT Gamma-Ray Spectrometer | Authors: | BRABANTS, Lowie SIMONS, Mattias DE SCHEPPER, David DEMEESTER, Eric SCHROEYERS, Wouter |
Issue Date: | 2022 | Publisher: | TAYLOR & FRANCIS INC | Source: | NUCLEAR TECHNOLOGY, 208 (11) , p. 1681-1695 | Abstract: | This study determines the minimal detection time (MDT) needed for successful localization of radioactive hot spots during nuclear decommissioning work. An automated XY stage, equipped with a CdZnTe (CZT) spectrometer, was used to identify and localize hot spots of Am-241, Cs-137, and Co-60 in a 1.7 x 1.7-m area. The stage served as a preliminary test platform for the development of an automated robotic characterization platform [Autonomous Robotic platform for CHaractERization (ARCHER) robot]. The dependence of the MDT on the detector efficiency and background (BKG) level was examined. For low BKG environments, the MDT for Cs-137 was 871 ms and resulted in an error of the source localization of 14.21 mm and an error of the activity of 6.85%. For elevated BKG levels, the MDT increased to 15 526 ms. The Cs-137 source was localized with an error of 34.13 mm and an error of the source activity of -7.04%. The MDT determination method used here offers a valuable approach for decreasing total scanning times while avoiding missing the presence of hot spots. | Notes: | Brabants, L (corresponding author), Hasselt Univ, Nucl Technol Fac Engn Technol, NuTeC, CMK, Agoralaan Bldg H, B-3590 Diepenbeek, Belgium. lowie.brabants@uhasselt.be |
Keywords: | Radiation mapping;radiological hot spot localization;CZT detector;minimal detectable activity;minimal detection time | Document URI: | http://hdl.handle.net/1942/37675 | ISSN: | 0029-5450 | e-ISSN: | 1943-7471 | DOI: | 10.1080/00295450.2022.2073950 | ISI #: | WOS:000817883700001 | Rights: | 2022 American Nuclear Society | Category: | A1 | Type: | Journal Contribution | Validations: | ecoom 2023 |
Appears in Collections: | Research publications |
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Minimal Detection Time for Localization of Radioactive Hot Spots in Low and Elevated Background Envi.pdf Restricted Access | Published version | 9.53 MB | Adobe PDF | View/Open Request a copy |
autersversie.pdf | Peer-reviewed author version | 1.25 MB | Adobe PDF | View/Open |
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