Results 31 to 40 of about 34,106 (228)

Physics-based modelling and validation of inter-granular helium behaviour in SCIANTIX

Nuclear Engineering and Technology, 2022
In this work, we propose a new mechanistic model for the treatment of helium behaviour at the grain boundaries in oxide nuclear fuel. The model provides a rate-theory description of helium inter-granular behaviour, considering diffusion towards grain ...
R. Giorgi, A. Cechet, L. Cognini, A. Magni, D. Pizzocri, G. Zullo, A. Schubert, P. Van Uffelen, L. Luzzi   +8 more
doaj   +1 more source

Inert gas accumulation in sonoluminescing bubbles [PDF]

, 1997
In this paper we elaborate on the idea [Lohse et al., Phys. Rev. Lett. 78, 1359-1362 (1997)] that (single) sonoluminescing air bubbles rectify argon.
Detlef Lohse, Frenzel H., Kuttruff H., Prosperetti A., Sascha Hilgenfeldt   +4 more
core   +5 more sources

Helium behaviour in implanted boron carbide

EPJ Nuclear Sciences & Technologies, 2015
When boron carbide is used as a neutron absorber in nuclear power plants, large quantities of helium are produced. To simulate the gas behaviour, helium implantations were carried out in boron carbide.
Motte Vianney, Gosset Dominique, Miro Sandrine, Doriot Sylvie, Surblé Suzy, Moncoffre Nathalie   +5 more
doaj   +1 more source

Damage studies on irradiated tungsten by helium ions in a plasma focus device

Nuclear Engineering and Technology, 2020
Damage of tungsten due to helium ions of a PF device was studied. The tungsten was analyzed by SEM and AFM after irradiation. SEM revealed fine bubbles of helium atoms with diameters of a few nanometers, which join and form larger bubbles and blisters on
Mir mohammadreza Seyyedhabashy, Mohammad Amirhamzeh Tafreshi, Babak Shirani bidabadi, Sepideh Shafiei, Ali Nasiri   +4 more
doaj   +1 more source

Cavitation of Electrons Bubbles in Liquid Helium Below saturation Pressure

, 2005
We have used a Hartree-type electron-helium potential together with a density functional description of liquid $^4$He and $^3$He to study the explosion of electron bubbles submitted to a negative pressure.
A. Guirao, C.-K. Su, C.-K. Su, C.C. Grimes, D. Konstantinov, DM. Jezek, DM. Jezek, DN. Sinha, DW. Oxtoby, E. Tanaka, EM. Chudnovsky, F. Ancilotto, F. Ancilotto, F. Caupin, F. Caupin, F. Dalfovo, F. Dalfovo, H. Lambaré, HJ. Maris, HJ. Maris, HM. Guo, J. Boronat, J. Classen, J. Classen, J. Classen, J. Dupont-Roc, J. Tempere, JA. Nissen, M. Barranco, M. Barranco, M. Guilleumas, M. Guilleumas, M. Iino, M. Iino, M. Rosenblit, M. Rosenblit, Manuel Barranco, Martí Pi, NR. Kestner, P. Roche, Q Xiong, Q. Xiong, RA. Ferrel, Ricardo Mayol, S. Balibar, S. Balibar, T. Nakamura, T. Satoh, Víctor Grau, WH. Press, X. Chavanne   +50 more
core   +2 more sources

Near-surface fragmentation in irradiated copper under two successive shock loading: effects of local temperature re-distribution and helium bubble expansion

Materials & Design
The underlying physical mechanisms of metal materials associated with the effects of helium bubbles on surface damage under complex shock loading remain mysterious, primarily due to the challenges of observing dynamic evolution in situ and in real time ...
Qiang Bao, Haonan Sui, Bao Wu, Xin-Xin Wang, Qi Zhu, Jian-Li Shao, An-Min He, Pei Wang   +7 more
doaj   +1 more source

Exploring the impact of pre-existing helium bubbles on nanoindentation in tungsten through molecular dynamics simulation

Journal of Materials Research and Technology
Gaining insight into the underlying mechanisms driving nanoindentation-induced behavior in tungsten is essential for comprehending its mechanical properties.
Pan-dong Lin, Jun-feng Nie, Shu-gang Cui, Wen-dong Cui, Lei He, Gui-yong Xiao, Yu-peng Lu   +6 more
doaj   +1 more source

Influence of exposure conditions on helium transport and bubble growth in tungsten

Scientific Reports, 2021
Helium diffusion, clustering and bubble nucleation and growth is modelled using the finite element method. The existing model from Faney et al. (Model Simul Mater Sci Eng 22:065010, 2018; Nucl Fusion 55:013014, 2015) is implemented with FEniCS and ...
Rémi Delaporte-Mathurin, Mykola Ialovega, Etienne A. Hodille, Jonathan Mougenot, Yann Charles, Elodie Bernard, Céline Martin, Christian Grisolia   +7 more
doaj   +1 more source

Reducing bubbles in glass coatings improves electrical breakdown strength [PDF]

, 1968
Helium reduces bubbles in glass coatings of accelerator grids for ion thrustors. Fusing the coating in a helium atmosphere creates helium bubbles in the glass.
Banks, B.
core   +1 more source

Characterization of a Recyclate‐Based MgO‐Steel Composite As‐Sintered Inert Anode Candidate After Exposure to Cryolite Electrolysis

Advanced Engineering Materials, EarlyView.
Carbon‐free inert anodes are essential for decarbonizing aluminum electrolysis. This study investigates a recyclate‐based MgO‐316L steel composite anode tested under galvanostatic Hall–Héroult conditions in cryolite at 1000°C. Microstructural analysis reveals selective MgO fluorination, spinel and oxide layer formation, electrolyte infiltration, and ...
Serhii Yaroshevskyi, Alexander Adamczyk, Nora Brachhold, Gert Schmidt, Jana Hubálková, R. Gumeniuk, Alexandros Charitos, Christos G. Aneziris   +7 more
wiley   +1 more source