Home / Store / Journals / Electronic Articles / Nuclear Science and Engineering / Volume 30 / Number 1
M. Tomlinson, R. R. Tymko, Donna Wuschke
Nuclear Science and Engineering
Volume 30 / Number 1 / October 1967 / Pages 14-19
Format:electronic copy (download)
The hydrogenated terphenyl mixture HB-40 which is in use as a reactor organic coolant, has been irradiated at 350°C with 1.5-MeV electrons. Changes in composition and properties are reported. Decomposition proceeded at half the rate per unit dose observed previously during reactor irradiations where 62% of the absorbed energy was due to fast neutrons. This indicates a dependence of hydroterphenyl radiolysis on Linear Energy Transfer, whereby recoil protons produce 3.2 ± 0.6 times as much decomposition as electrons. Some differences between the physical properties of electron-irradiated material and the properties of reactor-irradiated material were noted.
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