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The helium trimer with soft-core potentials [PDF]
, 2011 The helium trimer is studied using two- and three-body soft-core potentials. Realistic helium-helium potentials present an extremely strong short-range repulsion and support a single, very shallow, bound state.
A. Kievsky +34 more
core +3 more sources
A New Window into Escaping Exoplanet Atmospheres: 10830 Å Line of Helium [PDF]
, 2017 Observational evidence for escaping exoplanet atmospheres has been obtained for a few exoplanets to date. It comes from strong transit signals detected in the ultraviolet, most notably in the wings of the hydrogen Lyα (Lyα) line. However, the core of the
A. Oklopčić, C. Hirata
semanticscholar +1 more source
European Journal of Materials, 2022 The utilisation of helium as process gas in laser powder bed fusion limits the generation of Ti-6Al-4V hot and incandescent spatters and enhances their cooling rate.
Camille Pauzon +7 more
doaj +1 more source
Helium Ionization in the Diffuse Ionized Gas surrounding UCHII regions [PDF]
, 2017 We present measurements of the singly ionized helium to hydrogen ratio ($n_{He^+}/n_{H^+}$) toward diffuse gas surrounding three Ultra-Compact HII (UCHII ) regions: G10.15-0.34, G23.46-0.20 \& G29.96-0.02.
Anderson, L. D. +2 more
core +3 more sources
Inert gas absorption and pore formation in nickel-based hot-melt alloys [PDF]
Металознавство та обробка металів, 2021 An integrated approach to the generalization and analysis of scientific and technical literature in the direction of improving the technological processes of spraying metal melts used a comprehensive approach The processing and analysis of experimental ...
Yu. F. Ternovyi +2 more
doaj +1 more source
Free-energy model for fluid helium at high density [PDF]
, 2004 We present a semi-analytical free-energy model aimed at characterizing the thermodynamic properties of dense fluid helium, from the low-density atomic phase to the high-density fully ionized regime. The model is based on a free-energy minimization method
Christophe Winisdoerffer +3 more
core +2 more sources
Detectability of Light Dark Matter with Superfluid Helium. [PDF]
Physical Review Letters, 2016 We show that a two-excitation process in superfluid helium, combined with sensitivity to meV energy depositions, can probe dark matter down to the ∼keV warm dark matter mass limit.
K. Schutz, K. Zurek
semanticscholar +1 more source
Radiation-Induced Helium Bubbles in Metals
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 ...
Shi-Hao Li, Jing-Ting Li, W. Han
semanticscholar +1 more source
The effects of He I λ10830 on helium abundance determinations [PDF]
, 2015 Observations of helium and hydrogen emission lines from metal-poor extragalactic H II regions, combined with estimates of metallicity, provide an independent method for determining the primordial helium abundance, Yp.
E. Aver, K. Olive, E. Skillman
semanticscholar +1 more source