نتایج جستجو برای: sputtering atoms

تعداد نتایج: 67393  

Journal: : 2023

The results of modeling the sputtering coefficients polycrystalline beryllium by hydrogen isotopes in range collision energies 8 eV-100 keV and their dependences on angle incidence beam surface are presented. This data is necessary for estimating first wall ITER tokamak made from beryllium. A strong shape influence obtained shown. limiting cases a flat potential barrier (smooth surface) spheric...

1999
Zhehui Wang Samuel A. Cohen D. N. Ruzic M. J. Goeckner

Energy distributions of N atoms in a hollow-cathode planar sputtering magnetron were obtained by use of optical emission spectroscopy. A characteristic line, N I 8216.3 Å, well-separated from molecular nitrogen emission bands, was identified. Jansson's nonlinear spectral deconvolution method, refined by minimization of χw , was used to obtain the optimal deconvolved spectra. These showed nitrog...

Journal: :Physical review letters 2013
G Greaves J A Hinks P Busby N J Mellors A Ilinov A Kuronen K Nordlund S E Donnelly

Sputtering yields, enhanced by more than an order of magnitude, have been observed for 80 keV Xe ion irradiation of monocrystalline Au nanorods. Yields are in the range 100-1900  atoms/ion compared with values for a flat surface of ≈50. This enhancement results in part from the proximity of collision cascades and ensuing thermal spikes to the nanorod surfaces. Molecular dynamic modeling reveals...

2014
I Z. C. Chang S. C. Liang

RF magnetron sputtering is used on the ceramic targets, each of which contains zinc oxide (ZnO), zinc oxide doped with aluminum (AZO) and zinc oxide doped with gallium (GZO). The electric conduction mechanism of the AZO and GZO films came mainly from the Al and Ga, the oxygen vacancies, Zn interstitial atoms, and Al and/or Ga interstitial atoms. AZO and GZO films achieved higher conduction than...

2014
Y. M. Lee D. Ahn J.-Y. Kim Y. S. Kim S. Cho M. Ahn M.-H. Cho M. S. Jung D. K. Choi M.-C. Jung Y. B. Qi

We fabricated and characterized the material with Mn (10 at.%: atomic percent) doped In3Sb1Te2 (MIST) using co-sputtering and synchrotron radiation, respectively. The MIST thin film showed phase-changes at 97 and 320 °C, with sheet resistances of ~10 kΩ(sq) (amorphous), ~0.2 kΩ(sq) (first phase-change), and ~10 Ω(sq) (second phase-change). MIST did not exhibit any chemical separation or increas...

2012
Robert E. Johnson Robert W. Carlson Timothy A. Cassidy Marcelo Fama

5 Abstract Data obtained from the exploration of the outer solar system has led to a 6 new area of physics: electronically induced sputtering of low-temperature, 7 condensed-gas solids, here referred to as ices. Icy bodies in the outer solar system 8 are bombarded by relatively intense fluxes of ions and electrons, as well as the 9 background solar UV flux, causing changes in their optical refl...

Journal: :Magnetochemistry 2022

Magnetic FeGa and FeGaNi films with an in-plane anisotropy were deposited by employing oblique magnetron sputtering. With the increase in angle, crystallite size of decreases, which indicates that sputtering can refine size. The remanence ratio increases from 0.5 to 0.92 for easy axis, coercivity decrease calculated static anisotropic field shows magnetic be induced strength angle. After doping...

Journal: : 2023

The level set method was generalized for simulating the evolution of surface multilayer substrates under focused ion beam irradiation. For a correct description such process calculations took into account sputtering yield angular dependences, densities irradiated materials and it considered that sputtered atoms can escape from different layers substrate. Comparison calculation results with expe...

Journal: :Nuclear Fusion 2022

Abstract Atomistic simulations with machine-learned potential energy functions are employed for understanding the mechanisms driving sputtering of beryllium by low-energy deuterium and tritium atoms details their retention on pristine surfaces. The interaction between hydrogen/deuterium/tritium surfaces regarding erosion yields is investigated molecular dynamics simulations. both hydrogen isoto...

Journal: :Nuclear materials and energy 2021

Abstract Modelling of the hydrogen reflection on tungsten smooth and fuzz surfaces under low-energy plasma bombardment has been performed with three-dimensional kinetic Monte Carlo code SURO-FUZZ. The relative coefficient atoms, i.e. ratio reflected atoms surface to that one, is employed illustrate change in surfaces. simulated shows a large discrepancy measured values obtained experiment. impi...

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