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133
helium-bubble formation in borosilicate glass
, 2006
"... Small-angle X-ray scattering measurements of helium-bubble formation in borosilicate glass ..."
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Small-angle X-ray scattering measurements of helium-bubble formation in borosilicate glass
ATOMIC SPECTRA IN A HELIUM BUBBLE
, 2002
"... Density functional theory (DFT) is applied to atomic spectra under perturbations of superfluid liquid helium. The atomic DFT of helium is used to obtain the distribution of helium atoms around the impurity atom, and the electronic DFT is applied to the excitations of the atom, averaging over the ens ..."
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atoms and molecules in superfluid helium have been attracting considerable interest in recent years. 1,2 The repulsive force between an impurity and helium atoms induces a bubble around the impurity. This leads to a weak perturbation of helium atoms on the spectra of impurities. The line shifts
THE DEPTHS OF HYDROGEN AND HELIUM BUBBLES IN TUNGSTEN: A COMPARISON
, 2005
"... The role of self-trapping and defect trapping of hydrogen and helium implanted into tungsten has been investigated using density functional theory (DFT) cal-culations, molecular dynamics simulations, and kinetic Monte Carlo simulations (KMCSs). The potential energy curves of hydrogen or helium pairs ..."
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indicate that self-trapping plays no (or a very small) role in hydrogen bubble formation, whereas helium bubbles form due to strong self-trapping.
A THREE-DIMENSIONAL MESO-SCALE MODELING FOR HELIUM BUBBLE GROWTH IN METALS
"... A three-dimensional meso-scale computer model using a Monte-Carlo simulation method has been proposed to simulate the helium bubble growth in metals. The primary merit of this model is that it enables the visual comparison between the microstructure observed by the TEM imaging and those by calculati ..."
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A three-dimensional meso-scale computer model using a Monte-Carlo simulation method has been proposed to simulate the helium bubble growth in metals. The primary merit of this model is that it enables the visual comparison between the microstructure observed by the TEM imaging and those
Determination of suitable Flow Distributions and Helium Bubble Diameters for operating the ESS Target
, 2003
"... This paper presents the Computational Fluid Dynamics (CFD) analyses performed in order to determine the effects of the mass flow distribution within the target of the European Spallation Source on the window and the liquid mercury temperature. For flow distributions where less than about 23 % of the ..."
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temperature of 573 K; • flow distribution where about 15 % of the total mass flow rate passes through the bottom ducts yields the optimal temperature distribution within the target. In addition, the effect of the diameter of the injected helium bubbles on the bubble trajectories has been determined. The CFD
Smoke and Helium Bubble Visualization Studies of Incompressible Flow Past a JetFlap Airfoil
- Master's Thesis, Department of Aeronautics and Astronautics, Naval Postgraduate School
, 1972
"... Smoke and helium bubble visualization studies of incompressible flow past a jet-flap airfoil ..."
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Cited by 3 (0 self)
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Smoke and helium bubble visualization studies of incompressible flow past a jet-flap airfoil
Original Scientific Article Model for the Formation of Helium Bubbles in Palladium†
, 2013
"... Abstract. In implantation experiments or in the inner wall of the vessel of nuclear reactors, irradiation of metals with helium damages the material by forming defects. We focus on studying the formation of He bubbles by analyzing the energetics of He atoms in bulk palladium and present a simple mod ..."
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Abstract. In implantation experiments or in the inner wall of the vessel of nuclear reactors, irradiation of metals with helium damages the material by forming defects. We focus on studying the formation of He bubbles by analyzing the energetics of He atoms in bulk palladium and present a simple
Performance Studies on Sub-cooling of Cryogenic Liquids Used for Rocket Propulsion Using Helium Bubbling
"... Abstract—The sub-cooling of cryogenic propellants contained in tanks is an important and effective method for bringing down the lift-off mass of launch vehicle and thus the performance of the rocket engine is greatly improved. This paper presents the technical and experimental studies conducted on c ..."
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on cryogenic liquids such as Liquid Oxygen, Liquid Nitrogen, and Liquid Hydrogen using helium bubbling method. The influence of cooled Helium on the degree of sub-cooling and the variation in flow rate of Helium gas admitted are discussed. The experimental and theoretical studies indicate that the sub
Results 1 - 10
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133
