Author:
Sohrabi Mehdi,Hakimi Amir
Abstract
AbstractNeutron spectrometry in science and technology applications in general and accurate exotic photoneutron (PN) dosimetry of cancer patients undergoing high-dose high-energy X-rays therapy in medical accelerators in particular is of vital need. In this study, a novel passive multi-directional multi-detector neutron spectrometry system was developed and home-made using 6 polycarbonate/10B detectors on 6 sides of polyethylene (PE) cubes used bare and also embedded at center of PE spheres of 8 different diameters. The system provided well-resolved unfolded directional PN spectra showing thermal and fast PN peaks of 6 sides and mean spectrum in 5 field sizes at isocenter and other locations in 18 MV Siemens ONCOR medical linear accelerator bunker. The neutron spectrometry system developed has unique characteristics such as being simple, efficient, low cost, practical, and insensitive to low-LET radiation with well-resolved directional and mean spectra easily applicable in medicine, health, environment, science and technology in developing and developed laboratories.
Publisher
Springer Science and Business Media LLC
Reference53 articles.
1. Sohrabi, M. & Hakimi, A. Novel ‘photoneutron volume dose equivalent’ hypothesis and methodology for second primary cancer risk estimation in high-energy X-ray medical accelerators. Radiat. Prot. Dosim. https://doi.org/10.1093/rpd/ncz303 (2020).
2. Maglieri, R., Licea, A., Evans, M., Seuntjens, J. & Kildea, J. Measuring neutron spectra in radiotherapy using the nested neutron spectrometer. Med. Phys. 42, 6162–6169 (2015).
3. Hu, J. et al. Recoil-proton track imaging as a new way for neutron spectrometry measurements. Sci. Rep. 8, 1–8 (2018).
4. Maspero, M. et al. A real time scintillating fiber time of flight spectrometer for linac photoproduced neutrons. Nucl. Instrum. Method A. 777, 154–160 (2015).
5. McGinley, P. & Sohrabi, M. Neutron contamination in the primary beam. In Proceedings of Conference on Neutrons from Electron Medical Accelerators: held at the National Bureau of Standards, Gaithersburg, Maryland, April 9–10 (1979).
Cited by
5 articles.
订阅此论文施引文献
订阅此论文施引文献，注册后可以免费订阅5篇论文的施引文献，订阅后可以查看论文全部施引文献