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Comment on “Investigations on ion irradiation induced modifications in Th 5f occupancy in thoria,” by P. Jegadeesan, S. Amirthapandian, Gurpreet Kaur, D. Sanjay Kumar, Arindam Das, D.K. Avasthi, K. Ananthasivan, B.K. Panigrahi
The primary purpose of this letter is to address some issues raised in the paper by Jegadeesan et al. There are three salient points. (1) The Branching Ratio (BR) analysis of thorium dioxide is complicated by peaks from Extended X-Ray Absorption Fine Structure (EXAFS). (2) Uranium metal is not an LS coupling but rather a delocalized 5f case. (3) Radiation damage effects in the BR measurements are small but strong effects can be seen in Resonant Photoemission.
Enhanced radiation resistance of W-based HEA under helium-ion irradiation conditions
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Formation and dissolution of carbides and precipitates in self-ion irradiated HT9 alloy
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Strengthening of Zr-based metallic glass at low dose helium ion irradiation
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The effect of hydrogen co-injection on the microstructure of triple ion irradiated F82H
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On the analysis of radiation-induced segregation at ion-irradiated grain boundaries
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Microstructural evolution in ion irradiated cold spray Cr coated Zr-alloy
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Effects of proton and oxygen ion irradiation on cardiovascular function and structure in a rabbit model
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Ion irradiation and examination of Additive friction stir deposited 316 stainless steel
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Multiply-charged argon ion irradiation of microfabricated niobium wires
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Finite element analysis of the impact of beam heating mode in molten salt corrosion experiments employing simultaneous ion irradiation
Finite element analysis was used to investigate the temperature and stress profiles that develop in 316L stainless steel membranes being irradiated using different proton beam conditions in contact with a molten salt environment. It was shown that in addition to a nonuniform irradiation profile, a focused 2 MeV proton beam leads to very strong temperature and stress gradients in the membrane, introducing highly localized driving forces that complicate and even compromise the integrity and reliability of the experimental results of corrosion studies. Here, the use of a focused beam in corrosion studies can create experimental artifacts that may misrepresent the true corrosion behavior. In contrast, the use of a rastered beam is shown to distribute the protons and resulting radiation damage uniformly across the membrane face, and more importantly, results in temperature and stress profiles that are not only very uniform but are of much lower magnitude. The use of a rastered beam during molten salt corrosion experiments is therefore recommended to achieve uniform damage rates, thereby reducing both gradients and magnitudes of the temperature and stress distributions.