Results 31 to 40 of about 458,757 (252)
Tungsten evolution under helium irradiation: Shape of bubbles by TEM and in-situ GISAXS analysis
Nuclear Materials and Energy, 2023 The evolution of the tungsten microstructure and properties under helium irradiation could cause problems for both operational and safety reasons in fusion reactors.
L. Corso +8 more
doaj +1 more source
Spectroscopy of Nonspherical Atomic Bubbles in Solid Helium [PDF]
The Journal of Physical Chemistry A, 2011 We analyze the effect of the host crystal symmetry on the optical spectra of the 6P(1/2)-6S(1/2) and 6P(3/2)-6S(1/2) transitions of atomic Cs in solid (4)He matrices. In particular, we address the deformation of the bubble structures formed by Cs in such quantum crystals.
Lebedev V, Moroshkin P, Weis A
openaire +2 more sources
Stability of multielectron 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. It is shown that for moving bubbles the Bernoulli effect can result in a range of pressures over which the bubbles are stable.
Guo, Wei, Jin, Dafei, Maris, Humphrey J.
openaire +2 more sources
Effects of temperature on helium bubble behaviour in Fe–9Cr alloy
, 2020 In the present study, Fe–9Cr model alloys were irradiated by 275 keV He+ ions at 500 to 800 °C to a peak damage level and implanted helium content of 0.5 dpa and 0.75 at% He, respectively.
Zhanfeng Yan +6 more
semanticscholar +1 more source
Sonoluminescence and collapse dynamics of multielectron bubbles in helium [PDF]
, 2004 Multielectron bubbles (MEBs) differ from gas-filled bubbles in that it is the Coulomb repulsion of a nanometer thin layer of electrons that forces the bubble open rather than the pressure of an enclosed gas.
A. P. Volodin +13 more
core +1 more source
Helium bubble nucleation in Laser Powder Bed Fusion processed 304L stainless steel
Journal of Nuclear Materials, 2020 The interest in application of Additive Manufacturing (AM) to nuclear industry stems not only from the benefits of design freedom and shortened lead time, but also from the possibility of enhancing the performance through microstructure control.
J. Hou +8 more
semanticscholar +1 more source
A study of helium bubble production in 10 keV He+ irradiated tungsten
Fusion Engineering and Design, 2017 X. Yi +7 more
semanticscholar +3 more sources
Scientific Reports, 2017 Tungsten is a promising plasma facing material for fusion reactors. Despite many favorable properties, helium ions incoming from the plasma are known to dramatically affect the microstructure of tungsten, leading to bubble growth, blistering, and/or to ...
Danny Perez +5 more
doaj +1 more source
Excited electron-bubble states in superfluid helium-4: a time-dependent density functional approach
, 2010 We present a systematic study on the excited electron-bubble states in superfluid helium-4 using a time-dependent density functional approach. For the evolution of the 1P bubble state, two different functionals accompanied with two different time ...
Dafei Jin +6 more
core +1 more source
Impulse Generation by an Open Shock Tube [PDF]
, 2008 We perform experimental and numerical studies of a shock tube with an open end. The purpose is to investigate the impulse due to the exhaust of gases through the open end of the tube as a model for a partially filled detonation tube as used in pulse ...
Browne, S. T. +3 more
core +1 more source