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Atomic structure of Ga and As atoms on GaAs(110)
Physical Review B, 1995Atomic structures of Ga and As atoms on GaAs(110) were examined employing a first-principles pseudopotential method. Both Ga and As atoms reside in the center of a triangle consisting of a surface Ga and two surface As atoms in the single-atom chemisorbed state. Adsorption energies for Ga and As atoms are 3.1 and 3.5 eV, respectively.
, Yi, , Koo, , Lee, , Ha, , Lee
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Atomization Using a Pressure-Gas-Atomizer
Materials Science Forum, 2007An update and the latest results on molten metal atomization using a Pressure-Gas- Atomizer will be given. This atomizer combines a swirl-pressure atomizer, to generate a liquid hollow cone film and a gas atomizer to atomize the film and/or the fragments of the film.
Lydia Achelis +3 more
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Binding of noble gas atoms by superhalogens
The Journal of Chemical Physics, 2021Because of their closed shells, noble gas (Ng) atoms (Ng = Ne, Ar, Kr, and Xe) seldom take part in chemical reactions, yet finding such mechanisms not only is of scientific interest but also has practical significance. Following a recent work by Mayer et al. [Proc. Natl. Acad. Sci. U. S. A.
Hong Fang, Deepika Deepika, Puru Jena
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Diffusion of hydrogen atoms in helium gas and helium atoms in hydrogen gas
Physical Review A, 2002The potential of Meyer and Frommhold describing the interaction between hydrogen and helium atoms is used to calculate the diffusion coefficients of hydrogen atoms in helium gas and helium atoms in hydrogen gas as functions of temperature, taking into account higher-order corrections of transport theory.
H-K. Chung, A. Dalgarno
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Beryllium bonding with noble gas atoms
Journal of Computational Chemistry, 2022AbstractQuantum chemical calculations were carried out to investigate the nature of the bonding between a neutral Be3ring and noble gas atom. Electronic structure calculation for these complexes was carried out at different computational levels in association with natural bond orbital, quantum theory of atoms in molecules, electron localization ...
Lakhya Jyoti Mazumder +3 more
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Experimental and numerical modeling of the gas atomization nozzle for gas flow behavior
Computers and Fluids, 2011 Gas atomization is a widely used process for manufacturing of fine metal- and alloy-powder. To ensure a stable process with high yields of metal powder, the negative pressure at the melt delivery tube tip base and no flow separation conditions are ...
Ozer Aydin, Rahmi Ünal
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Physics Letters A, 1997
Abstract Power series in perturbation theory diverge when applied to wavefunctions of atoms in gas. We propose an approach in which the divergence is removed by taking into account the collapses of the wavefunctions explicitly. The collapses act on the scattered waves, in a self-consistent manner, and transform them into wave packets with localized ...
B.B. Kadomtsev, M.B. Kadomtsev
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Abstract Power series in perturbation theory diverge when applied to wavefunctions of atoms in gas. We propose an approach in which the divergence is removed by taking into account the collapses of the wavefunctions explicitly. The collapses act on the scattered waves, in a self-consistent manner, and transform them into wave packets with localized ...
B.B. Kadomtsev, M.B. Kadomtsev
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Nature, 1932
THE development of molecular ray technique makes possible investigations of the scattering of one beam of gas atoms by another. It is therefore of considerable interest to examine the conditions under which effects characteristic of the wave nature of the atoms would be observed.
H. S. W. MASSEY, C. B. O. MOHR
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THE development of molecular ray technique makes possible investigations of the scattering of one beam of gas atoms by another. It is therefore of considerable interest to examine the conditions under which effects characteristic of the wave nature of the atoms would be observed.
H. S. W. MASSEY, C. B. O. MOHR
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On the instability in gas atomization
Applied Mathematics and Mechanics, 1999The instability theory of fluid flow is applied in gas atomization and the results show that the instability of interfacial wave is the main cause of gas atomization. The size of the droplets and its change with parameters are also studied, the results are compatible with the experiments.
Ma Zheng, Zhou Zhewei
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Modeling of atomization rate during gas atomization
Acta Materialia, 1998Abstract A mathematical model provides the tools to compute the atomization rate from the backpressure, and the height of the descending liquid head and the amount of the over-pressure required as the functions of the atomization time. The computed data agree reasonably well with the experimental data.
Y.M. Chen +3 more
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