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Radionuclide Source Term for Irradiated Fuel from Prototype, Research and Education Reactors, for Waste Forms with Negligible Heat Generation and for Uranium Tails: KIT Scientific Reports?
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>plus, you know, the wigner energy thing which you still haven't addressed.
MSRs (Molten Salt Recactors) keep the graphite temperature well over 500*C, as a result the amount of Wigner energy that can build up is extremely small.
https://www.amazon.ca/Radionuclide-Irradiated-Prototype-Negligible-Generation/dp/386644964X
https://d-nb.info/1036201996/34
https://inis.iaea.org/search/search.aspx?orig_q=RN:48009911
KIT Scientific Reports 7635
Radionuclide Source Term for Irradiated Fuel from Prototype, Research and Education Reactors, for Waste Forms with Negligible Heat Generation and for Uranium Tails Bernhard Kienzler, Marcus Altmaier, Christiane Bube, Volker Metz
Wigner energy (or “stored” energy) is generated in graphite under neutron irradiation because carbon atoms are displaced from their normal lattice positions into configurations of higher potential energy [8]. The quantity of accumulated “stored” energy is a function of fast neutron flux, irradiation time, and temperature. The higher the irradiation temperature, the lower is the amount of “stored” energy.
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Stored (Wigner) energy is not an issue in HTR because of the very high temperatures of the graphite during operation.
http://indico.ictp.it/event/7633/session/1/contribution/17/material/0/0.pdf
Radiation Effects in Graphite
Michael I. Ojovan
Nuclear Engineer, Department of Nuclear Energy, IAEA, Vienna Assistant Professor (Visiting), The University of Sheffield, S1 3JD, UK (staff member 2002-2011)
Anthony J. Wickham
Professor (Visiting), Nuclear Graphite Consultancy, Cwmchwefru, Builth Wells, LD2 3PW, UK and School of Mechanical, Aerospace and Civil Engineering, The University of Manchester, Manchester M13 9PL, UK
Page 19
The saturation levels of stored energy for irradiations above ~300*C is too small to be of practical importance.
https://www.research.manchester.ac.uk/portal/files/54516552/FULL_TEXT.PDF
The University of Manchester
Michael Lasithiotakis
Doctor of Philosophy in Materials Science
Irradiated Graphite Waste - Stored Energy
The cores of early UK graphite moderated research and production nuclear fission reactors operated at temperatures below 150°C. Due to this low temperature their core graphite contains significant amounts of stored (Wigner) energy
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