Ключевые слова
Activation analysis
Experimental nuclear physics
Reactor physics
Как цитировать
Аннотация
Neutron flux measurement is integral to nuclear physics, with implications across nuclear engineering, medical physics, and material science. This study details neutron flux mapping in the TRIGA reactor in Vienna using the gold foil activation method. Identical gold foils were prepared, subjected to 10-minute irradiation within the reactor core, and subsequently assessed using a 4πβ counter. The neutron flux distribution was theoretically modeled as a Bessel function and cross-referenced against measured activities to yield an experimental thermal neutron flux map. Findings reveal a close alignment between theoretical and experimental data, with a slight flux increase at the core's outermost periphery due to the graphite reflector. This work contributes valuable data on the TRIGA reactor's neutron flux distribution, with broader applicability in the field of reactor experiments and operation.
Библиографические ссылки
International Atomic Energy Agency (1982), Dosimetry for criticality accidents: A Manual.
Borio di Tigliole, A., Cammi, A., Chiesa, D., Clemenza, M., Manera, S., Nastasi, M., Pattavina, L., Ponciroli, R., Pozzi, S., Prata, M., Previtali, E., Salvini, A., & Sisti, M. (2014). Triga reactor absolute neutron flux measurement using activated isotopes. Progress in Nuclear Energy, 70, 249–255. https://doi.org/10.1016/j.pnucene.2013.10.001
Safeguards Traineeship, Practical exercises in research reactors, March 1 – April 1, 2023, Vienna, Austria.
K. H. Beckurts and K. Wirt (1972), Neutron physics.
International Atomic Energy Agency (1987), Handbook on Nuclear Activation Data, Technical reports series 273, Vienna, 1987.
Core (tpub.com)
File:Au-198-decay-scheme.svg - Wikimedia Commons
Glasstone, S., & Edlund, M. C. (1957). The elements of nuclear reactor theory. Van Nostrand.
Sathian, D., Chougaonkar, M. P., & Mayya, Y. S. (2010). A new technique for beta attenuation studies in neutron activation foils using 4π- coincidence system. Radiation Protection Dosimetry, 142(2–4), 92–98. https://doi.org/10.1093/rpd/ncq261
Berthold Technologies Beta counter manual.
Mueck, K., & Bensch, F. (1973). Cadmium correction factors of several thermal neutron foil detectors. Journal of Nuclear Energy, 27(9), 677–688. https://doi.org/10.1016/0022-3107(73)90025-7
Borio di Tigliole, A., Cammi, A., Chiesa, D., Clemenza, M., Manera, S., Nastasi, M., Pattavina, L., Ponciroli, R., Pozzi, S., Prata, M., Previtali, E., Salvini, A., & Sisti, M. (2014). Triga reactor absolute neutron flux measurement using activated isotopes. Progress in Nuclear Energy, 70, 249–255. https://doi.org/10.1016/j.pnucene.2013.10.001
Als-Nielsen, J. (1967). Corrections in the gold foil activation method for determination of neutron beam density. Nuclear Instruments and Methods, 50(2), 191–196. https://doi.org/10.1016/0029-554x(67)90040-7
Knoll, G. F. (2000). Radiation detection and measurement. John Wiley & Sons, Inc.
Это произведение доступно по лицензии Creative Commons «Attribution-NonCommercial-NoDerivatives» («Атрибуция — Некоммерческое использование — Без производных произведений») 4.0 Всемирная.
Copyright (c) 2023 GEORGIAN SCIENTISTS