Results 181 to 190 of about 34,325 (227)

Structure of multielectron bubbles in liquid helium

Physical Review B, 1992
We present a detailed density-functional calculation for multielectron bubbles with charges {ital z}{le}50. The calculation is similar to that for metal clusters, but we found no obvious shell structure in the charged bubbles. The exchange-correlation interaction has the important effect of reducing the bubble radius and, hence, enhances its stability.
, Shung, , Lin
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Superconductivity in Multielectron Bubbles in Helium

AIP Conference Proceedings, 2006
Superconductivity on a spherical, two‐dimensional surface is investigated in the context of multielectron bubbles in liquid helium, where the electron‐ripplon coupling is the underlying mechanism leading to pairing. In this contribution, we apply a BCS‐like self‐consistent mean‐field theory to calculate the superconducting gap.
Tempere, Jacques, Gladilin, Vladimir, Silvera, I.F., Devreese, Jozef   +3 more
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Synergistic effects in hydrogen–helium bubbles

Journal of Physics: Condensed Matter, 2012
The detrimental effects of hydrogen and helium on structural materials undergoing irradiation are well documented, if not well understood. There is experimental evidence to suggest that a synergistic effect between the two elements exists, which results in increased damage when both are present.
Erin, Hayward, Chaitanya, Deo
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On the migration of helium bubbles

Radiation Effects, 1983
(1983). On the migration of helium bubbles. Radiation Effects: Vol. 78, No. 1-4, pp. 381-383.
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Multielectron Bubbles in Liquid Helium

Journal of Low Temperature Physics, 2020
Multielectron bubbles (MEBs) are cavities in liquid helium that contain electrons and possibly vapour. They provide a versatile platform for exploring properties of interacting electrons in two dimensions in a regime of densities that has not been previously available.
Neha Yadav, Pranaya Kishore Rath, Zhuolin Xie, Yunhu Huang, Ambarish Ghosh   +4 more
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Positronium bubble in liquid helium

Journal of Physics B: Atomic and Molecular Physics, 1976
Accurate positron lifetime measurements have been performed in liquid helium-4 under saturated vapour pressure between 4.2K and 1.5K. The annihilation rate of free positrons is found to be proportional to the density of helium, indicating that no clustering of atoms occurs around the positrons.
P Hautojarvi, K Rytsola, M T Loponen
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Hydrogen and helium bubbles in silicon

Materials Science and Engineering: R: Reports, 2000
Abstract Hydrogen is a quite common impurity in semiconductor-silicon technology: it is unintentionally but unavoidably added to the silicon after crystal growth during wafer processing, and continues to be present during wet oxidation, film depositions, etching and annealing steps.
G. F. Cerofolini, CORNI, Federico, FRABBONI, Stefano, NOBILI, Carlo Emanuele, OTTAVIANI, Giampiero, TONINI, Rita   +5 more
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Nucleation of bubbles in liquid helium

Journal of Low Temperature Physics, 1993
We give a brief survey of experiments that have been performed to study the nucleation of bubbles in liquid helium at negative pressures.
H. J. Maris, S. Balibar, M. S. Pettersen
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Liquid Helium Bubble Chamber

1960
In order to study liquid helium as a bubble chamber fluid, experiments have been performed on a small cylindrical chamber 4 inches long and 1–1/2 inch in diameter. 1 Results indicate that usable tracks can be formed throughout the operating pressure region from atmospheric pressure down to 200 mm Hg.
W. M. Fairbank, M. E. Blevins, M. M. Block, M. J. Buckingham, E. M. Harth, J. Leitner, G. G. Slaughter   +6 more
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Helium bubble bursting in tungsten

Journal of Applied Physics, 2013
Molecular dynamics simulations have been used to systematically study the pressure evolution and bursting behavior of sub-surface helium bubbles and the resulting tungsten surface morphology. This study specifically investigates how bubble shape and size, temperature, tungsten surface orientation, and ligament thickness above the bubble influence ...
Faiza Sefta, Niklas Juslin, Brian D. Wirth   +2 more
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