Back to Search
Start Over
DOSIMETRY WITH THE ABILITY TO DISTINGUISH PULSED AND NON-PULSED DOSE CONTRIBUTIONS.
- Source :
- Radiation Protection Dosimetry; Jul2020, Vol. 190 Issue 4, p437-445, 9p
- Publication Year :
- 2020
-
Abstract
- The concept of an active dosimetry system for pulsed radiation dose rate measurements is presented. Real-time distinction of pulsed and non-pulsed radiation contributions is based on the time structure of a single interaction. A fast tissue equivalent plastic scintillator is exploited to minimize the pile-up effect influence on absorbed energy measurements. Being connected to a fully digital signal processing board, the detector creates an active dosimetry system with adjustable parameters. With this system, absorbed dose rate measurements were carried out in a photon field with a time structure mimicking a radiotherapeutic beam, but also in the presence of a constant radiation field. Measurements show a linear dependence of a pulsed radiation contribution on the accelerator current in the investigated range of the total dose rate up to 8 μGy h<superscript>−1</superscript>. While increasing the accelerator current by 1 μA, the pulsed radiation dose rate grows by (26.2 ± 0.9) nGy h<superscript>−1</superscript> when considering pile-up events. [ABSTRACT FROM AUTHOR]
Details
- Language :
- English
- ISSN :
- 01448420
- Volume :
- 190
- Issue :
- 4
- Database :
- Complementary Index
- Journal :
- Radiation Protection Dosimetry
- Publication Type :
- Academic Journal
- Accession number :
- 146514622
- Full Text :
- https://doi.org/10.1093/rpd/ncaa120