| Autor: |
A. Biganeh, O. Kakuee, Z. Akbari, M. Azizi, M. Elahi, S. Sheibani, Y. Vosoughi |
| Jazyk: |
angličtina |
| Rok vydání: |
2024 |
| Předmět: |
|
| Zdroj: |
Journal of Nuclear Research and Applications, Vol 4, Iss 2, Pp 29-34 (2024) |
| Druh dokumentu: |
article |
| ISSN: |
2783-3402 |
| DOI: |
10.24200/jonra.2024.1516.1112 |
| Popis: |
Photon-photon coincidence counting is a primary standardization technique used for the absolute activity measurement of short half-life radionuclides. In this study, a coincidence spectrometer based on digital signal processing was developed for the absolute standardization of 125I seed Brachytherapy. The spectrometer includes a waveform digitizer that samples at the preamplifier signals directly from two similar 2ʺ × 2ʺ NaI (Tl) detectors. The sampled signals were shaped into trapezoidal signals for pulse height analysis. These detected signals were then recorded in a list file and the software was used to recognize coincidence events. Detailed discussions were included on the formulas for determining absolute activity measurement. The activity of a 125I seed was measured and showed good agreement with the reference values. This presented technique is a quick method for measuring the activity of 125I at nuclear hospitals. The standardized source can also serve as a tracer for measuring the activity of the 109Cd source |
| Databáze: |
Directory of Open Access Journals |
| Externí odkaz: |
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