Results 11 to 20 of about 32,253 (225)
Stability of multi-electron bubbles in liquid helium [PDF]
Physical Review B, 2008 The stability of multi-electron bubbles in liquid helium is investigated theoretically. We find that multi-electron bubbles are unstable against fission whenever the pressure is positive.
A. P. Volodin +10 more
core +2 more sources
Multielectron Bubbles in Liquid Helium [PDF]
Europhysics Letters (EPL), 1987 We have investigated multielectron bubbles in liquid 4He, which develop when the charged helium surface undergoes an electrohydrodynamic instability. Well-defined bubbles with charges ranging from 105 to 107 electrons are easily generated. Oscillations and fissioning of the bubbles are reported, and a new upper limit on their lifetime is set.
Albrecht, Uwe, Leiderer, Paul
openaire +2 more sources
Formation of Bubble-Loop Complexes During Helium Radiation in Fe-9Cr Steel
Frontiers in Energy Research, 2021 In the present study, the Fe-9Cr model alloy was irradiated with 240 keV He2+ at 550°C with a dose of 0.5 dpa at the peak damage region. The depth distribution of bubbles in Fe-9Cr alloy was investigated by transmission electron microscopy (TEM).
Tiantian Shi +9 more
doaj +1 more source
ATOMIC SPECTRA IN A HELIUM BUBBLE [PDF]
Clustering Aspects of Quantum Many-Body Systems, 2002 4 pages, 1 figures, Talk at the International symposium on "Clustering Aspects of Quantum Many-Body Systems" (POSTYK01), November 12-14, 2001, Kyoto ...
Nakatsukasa, Takashi +2 more
openaire +2 more sources
Numerical Investigation of Helium Bubble Rising Behavior in Cross-Type Channel
Frontiers in Energy Research, 2020 In a certain nuclear reactor, the coolant channel is a cross-type channel. There is little research about bubble rising behavior in this kind of channel, but the neutron detection would be affected by the bubbles.
Chunjie Zeng +7 more
doaj +1 more source
Radiation-Induced Helium Bubbles in Metals [PDF]
Materials, 2019 Helium (He) bubbles are typical radiation defects in structural materials in nuclear reactors after high dose energetic particle irradiation. In the past decades, extensive studies have been conducted to explore the dynamic evolution of He bubbles under various conditions and to investigate He-induced hardening and embrittlement.
Shi-Hao Li, Jing-Ting Li, Wei-Zhong Han
openaire +2 more sources
Metals, 2022 A high Nb-containing TiAl alloy Ti-45Al-8.5Nb-(W, B, Y) with nearly lamellar microstructure has been irradiated by 200 kV He2+ to a fluence of 1 × 1021 ions/m2 with a dose of about 1.1 dpa at 298 K and 773 K in this work.
Zeen Wu +4 more
doaj +1 more source
Helium bubble formation in ultrafine and nanocrystalline tungsten under different extreme conditions [PDF]
, 2015 We have investigated the effects of helium ion irradiation energy and sample temperature on the performance of grain boundaries as helium sinks in ultrafine grained and nanocrystalline tungsten.
A. Hassanein +48 more
core +1 more source
Materials Research Letters, 2018 This work, with an emphasis on helium irradiation rates appropriate for fusion-plasma conditions, advances the understanding of helium evolution at grain boundaries in W, an important consideration in the understanding of W as a plasma-facing component ...
X.-Y. Liu +3 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 +7 more
doaj +1 more source