Results 21 to 30 of about 186,527 (312)

Nucleation of helium in pure liquid lithium [PDF]

, 2023
Tritium self-sufficiency in fusion nuclear reactors will be based on the neutron capture by lithium in the so-called breeding blankets of the reactor, a nuclear reaction that will produce helium along with tritium.
Mazzanti Castrillejo, Fernando Pablo, Álvarez Galera, Edgar, Martí Rabassa, Jordi, Batet Miracle, Lluís   +3 more
core   +1 more source

Second Sound Shock Waves in Rotating Superfluid Helium [PDF]

, 1983
Second sound shock waves have been used to examine the breakdown of superfluidity in bulk He II. The maximum counterflow velocity achieved in this manner was measured at a variety of temperatures and pressures.
Torczynski, John Robert
core   +1 more source

Physical Properties of Helium and Application in Respiratory Care

Encyclopedia, 2023
Helium is a low-density, inert, monoatomic gas that is widely used in medical applications. In respiratory care, Helium is mainly used as an adjunct therapy for patients with severe upper airway obstruction and asthma.
Eric Chappel
doaj   +1 more source

Linewidths in bound state resonances for helium scattering from Si(111)-(1x1)H [PDF]

, 2009
Helium-3 spin-echo measurements of resonant scattering from the Si(111)–(1 × 1)H surface, in the energy range 4–14 meV, are presented. The measurements have high energy resolution yet they reveal bound state resonance features with uniformly broad ...
Ellis, J., Hedgeland, H., Alexandrowicz, G., Knowling, J., Jardine, A.P., Allison, W., Tuddenham, F.E., Gil Alexandrowicz, MacLaren, D.A.   +8 more
core   +1 more source

Active degassing of crustal CO2 in areas of tectonic collision: A case study from the Pollino and Calabria sectors (Southern Italy)

Frontiers in Earth Science, 2022
Carbon dioxide (CO2) is released from the Earth’s interior into the atmosphere through both volcanic and non-volcanic sources in a variety of tectonic settings.
Paolo Randazzo, Antonio Caracausi, Alessandro Aiuppa, Carlo Cardellini, Carlo Cardellini, Giovanni Chiodini, Carmine Apollaro, Michele Paternoster, Michele Paternoster, Angelo Rosiello, Giovanni Vespasiano   +10 more
doaj   +1 more source

Effects of Gas Pressure during Electron Beam Energy Deposition in the EBM Additive Manufacturing Process

Metals, 2021
Electron beam melting (EBM) is a metal powder bed fusion additive manufacturing (AM) technology that facilitates the production of metal parts by selectively melting areas in layers of metal powder.
Elroei Damri, Eitan Tiferet, Dor Braun, Yaron Itay Ganor, Michael Chonin, Itzhak Orion   +5 more
doaj   +1 more source

Helium bubble formation in nuclear glass by in-situ TEM ion implantation [PDF]

, 2014
The effect of helium implantation fluences in French nuclear borosilicate glass on He bubble nucleation and growth mechanisms was characterised using in-situ TEM experiments.
Greaves, Graeme, Oliviero, E., Peuget, S, Donnelly, S. E., Hinks, J. A., Peuget, S., Gutierrez, Gabriel Munoz, Gutierrez, G., Gutierrez, G, Jegou, C, Greaves, G., Jegou, C.   +11 more
core   +1 more source

Helium irradiation effects in polycrystalline Si, silica, and single crystal Si [PDF]

, 2012
Transmission electron microscopy (TEM) has been used to investigate the effects of room temperature 6 keV helium ion irradiation of a thin (≈55 nm thick) tri-layer consisting of polycrystalline Si, silica, and single-crystal Si.
Greaves, Graeme, Ward, M. B., Pawley, C. J., Abrams, K. J., Hinks, J. A., K. J. Abrams, D. Eyidi, G. Greaves, Greaves, G., Van den Berg, Jakob, S. E. Donnelly, Van Den Berg, J. A., Eyidi, D., Donnelly, S. E., J. A. Hinks, J. A. van den Berg, C. J. Pawley, M. B. Ward   +17 more
core   +1 more source

Monitoring Scheme for the Detection of Hydrogen Leakage from a Deep Underground Storage. Part 1: On-Site Validation of an Experimental Protocol via the Combined Injection of Helium and Tracers into an Aquifer

Applied Sciences, 2020
Massive underground storage of hydrogen could be a way that excess energy is produced in the future, provided that the risks of leakage of this highly flammable gas are managed. The ROSTOCK-H research project plans to simulate a sudden hydrogen leak into
Stéphane Lafortune, Philippe Gombert, Zbigniew Pokryszka, Elodie Lacroix, Philippe de Donato, Nevila Jozja   +5 more
doaj   +1 more source

The helium paradoxes [PDF]

Proceedings of the National Academy of Sciences, 1998
The ratio 3 He/ 4 He (R) plays a central role in models of mantle evolution that propose an undegassed lower mantle, rich in the primordial isotope 3 He. A large primordial volatile-rich reservoir, a feature of recent models, is inconsistent with high-temperature ...
openaire   +3 more sources