Results 81 to 90 of about 601,537 (357)
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
Observation of the Efimov state of the helium trimer [PDF]
Science, 2015 We report experimental observation of the long predicted but experimentally elusive Efimov state of 4He trimer by means of Coulomb explosion imaging. We show spatial images of an Efimov state, confirming the predicted size and a typical structure where ...
M. Kunitski +11 more
semanticscholar +1 more source
Advanced Functional Materials, EarlyView.Carbon nanomembranes with ultra‐thin Al2O3 functionalization are less than 15 nm thin and exhibit outstanding permeation performance with a water vapor/nitrogen selectivity higher than 1 × 104, twice that of pristine CNMs, and an exceptionally high water vapor permeation rate for potential applications in air dehumidification.
Jan Biedinger +10 more
wiley +1 more source
, 2006 We study the possibility of the helium decoupling in the stellar wind of sigma Ori E. To obtain reliable wind parameters for this star we first calculate an NLTE wind model and derive wind mass-loss rate and terminal velocity.
Groote, Detlef +2 more
core +1 more source
Advanced Functional Materials, EarlyView.Off‐centering of cations in pavonite‐structured Ag1.75InSb5.75Se11 (AISS) breaks crystal symmetry, inducing Rashba‐like band splitting and high band degeneracy, thus enhancing Seebeck coefficients. Soft bonds between off‐centered cations and Se atoms increase phonon scattering, achieving low lattice thermal conductivity (0.22 W m−1K−1 at 723 K). Doping
Chenghao Xie +7 more
wiley +1 more source
Evolution of Jupiter and Saturn with helium rain [PDF]
A&A 689, A15 (2024)Phase separation between hydrogen and helium at high pressures and temperatures leads to the rainout of helium in the deep interiors of Jupiter and Saturn. This process, also known as "helium rain", affects their long-term evolution. Therefore, modelling the evolution and internal structure of Jupiter and Saturn (and giant exoplanets) relies on the ...
arxiv +1 more source
Rare Helium-Bearing Compound FeO_{2}He Stabilized at Deep-Earth Conditions.
Physical Review Letters, 2018 There is compelling geochemical evidence for primordial helium trapped in Earth's lower mantle, but the origin and nature of the helium source remain elusive due to scarce knowledge on viable helium-bearing compounds that are extremely rare.
Jurong Zhang +8 more
semanticscholar +1 more source
PAMELA Measurements of Cosmic-Ray Proton and Helium Spectra [PDF]
Science, 2011 Satellite measurements challenge the current understanding of cosmic-ray acceleration and propagation in our Galaxy. Protons and helium nuclei are the most abundant components of the cosmic radiation.
O. Adriani +68 more
semanticscholar +1 more source
Helium in the Atmosphere [PDF]
Nature, 1908 RECENT investigations have demonstrated the widespread presence of the inert gases in the crystalline rocks, and the Hon. R. J. Strutt has shown that while the bulk of the gases in granite consists of nitrogen, there is a small but appreciable quantity of argon and helium, the former amounting to from three to four times the latter.
openaire +3 more sources