A Sub-Picoampere Measurement Algorithm for Use in Dosimetry of Time-Varying Radiation Fields.
| Autor: | Kuć M; Radiological Metrology and Biomedical Physics Division, National Centre for Nuclear Research, Andrzeja Sołtana 7, 05-400 Otwock, Poland.; Institute of Metrology and Biomedical Engineering, Faculty of Mechatronics, Warsaw University of Technology, Św. A. Boboli 8, 02-525 Warsaw, Poland., Maciak M; Radiological Metrology and Biomedical Physics Division, National Centre for Nuclear Research, Andrzeja Sołtana 7, 05-400 Otwock, Poland., Tulik P; Institute of Metrology and Biomedical Engineering, Faculty of Mechatronics, Warsaw University of Technology, Św. A. Boboli 8, 02-525 Warsaw, Poland. |
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| Jazyk: | angličtina |
| Zdroj: | Sensors (Basel, Switzerland) [Sensors (Basel)] 2024 Mar 21; Vol. 24 (6). Date of Electronic Publication: 2024 Mar 21. |
| DOI: | 10.3390/s24062012 |
| Abstrakt: | Dosimetry based on gas detectors operating in the recombination and saturation region provides unique research opportunities but requires high-quality electrometers with a measuring range below 1 pA (10 -12 A). The standard approach in electrometry is to strive to increase the accuracy and precision of the measurement, ignoring the importance of its duration. The article presents an algorithm for the measurement of low current values (from 100 fA) that allows both a fast measurement (with a step of 2.3 ms) and high accuracy (measurement error below 0.1%), depending on the measurement conditions and the expected results. A series of tests and validations of the algorithm were carried out in a measurement system with a Keithley 6517B electrometer and a REM-2 recombination chamber under conditions of constant and time-varying radiation fields. The result of the work is a set of parameters that allow for the optimisation of the operation of the algorithm, maximising the quality of the measurements according to needs and the expected results. The algorithm can be used in low current measurement systems, e.g., for dosimetry of mixed radiation fields using recombination methods and chambers. Competing Interests: The authors declare no conflicts of interest. |
| Databáze: | MEDLINE |
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