Sputtering of Tungsten by Beryllium and Neon Ions

Meluzova, D. S.; Babenko, P. Yu.; Zinoviev, A. N.; Шергин, А. П.

doi:10.1134/s1063785020120226

Cited by 7 publications

(4 citation statements)

References 21 publications

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“…Traditional models of sputtering are inapplicable in the considered case of bombardment of a target by light particles. The sputtering of surface layers by a flux of backscattered particles is dominant in this instance [1]. The values provided by the Sigmund model [2] are five times higher than the experimental ones.…”

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confidence: 69%

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Beryllium sputtering yields by hydrogen isotopes bombardment

Yu.

Mikhailov

Zinoviev

2023

Technical Physics Letters

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Using computer simulation, the sputtering coefficients of a beryllium target upon bombardment with hydrogen isotopes in the particle energy range 8 eV-100 keV and the dependences of the sputtering coefficients on the angle of incidence of the beam are obtained. Obtained results allow to estimate the sputtering of the ITER first wall and the entry of beryllium impurities into the hot plasma zone. Formulas are proposed for estimating the energy sputtering threshold and describing the sputtering coefficient dependence on the angle of incidence of the beam. Keywords: Sputtering yield, interatomic potential, hydrogen isotopes, beryllium.

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confidence: 69%

“…Threshold energy values with sputtering yields tending to zero are of interest. A model well-suited for nearthreshold energies, where surface atoms are sputtered by a flux of backscattered bombarding particles, was examined in our study [1]. The energy transferred to a surface atom in this case is…”

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confidence: 99%

Beryllium sputtering yields by hydrogen isotopes bombardment

Yu.

Mikhailov

Zinoviev

2023

Technical Physics Letters

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“…In addition to the study of the atoms passage through amorphic targets, the channeling phenomenon modeling was also performed in crystals. The distributions of runs of the D atoms in W(100) were also calculated at different initial energies [21] and angles of incidence. Fig.…”

Section: Atoms Passage Through a Crystalchanneling Modementioning

confidence: 99%

Simulation of ion irradiation of crystalline and amorphous targets tokamak-reactor first wall materials

et al. 2022

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An overview of results concerning simulation of various processes which occur due to atomic bombardment of crystalline and amorphous solids is presented. With the use of original computational codes, the following data were obtained: reflection coefficients, projected energy losses and ranges of ions in solids, channeling data as well as sputtering yield and its dependence on incident angle of bombarding particles for Be-W and Ne-W combinations. Be, C and W targets were studied as these are among the plasma-facing materials in tokamaks, including ITER. The emphasis was made on atom-target combinations which lack reliable experimental data. Experimental data on other materials were used to verify calculations. A significant influence of the interaction potential used on the simulation results is shown. The reviewed results are tied by a common subject a study of interaction of plasma ions and first-wall materials of a tokamak-reactor and also by a common method of study the use of an original computational code. Keywords: scattering, ion sputtering, interaction potential, energy release.

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“…A careful study of the energy distributions of the ions scattered by the crystal surface and the character of the one-time scattering maximum's decay showed the presence of ions with energies greater than the energies of the one-time scattered ions in the spectra. It has been suggested that the presence of such ions in the spectra is due either to simultaneous collisions of the ion with several target atoms or to sequential and in particular, multiple collisions of the ion with target atoms [4,5]. If the thickness of the target is much less, than the total range of incident, ions and ionization losses in the substance can be neglected, then such a target is called thin.…”

Section: Introductionmentioning

confidence: 99%

Investigation of Defect InP(001) Surface by Low Energy Ion Scаttering Spectroscopy

Karimov

Sadullaev

Otabaev

et al. 2022

MSF

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In this paper presents the computer simulation results on the investigations of the ion scattering processe on the defect InP(001)<110>,<ī10> surface under low-energy grazing ion bombardment have been presented. The peculiarities trajectories of the scattered ions from surface defect, atomic chain and semichannel have been investigated by computer simulation. It was found some trajectories nearby surface atomic chain which have loop shape and a line form. At grazing ion incidence, from a correlation of the experimental and calculated energy distributions of the scattered particles, one may determine a spatial extension of the missing atom on the monocrystal surface damaged by the ion bombardment.

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Sputtering of Tungsten by Beryllium and Neon Ions

Cited by 7 publications

References 21 publications

Beryllium sputtering yields by hydrogen isotopes bombardment

Beryllium sputtering yields by hydrogen isotopes bombardment

Simulation of ion irradiation of crystalline and amorphous targets tokamak-reactor first wall materials

Investigation of Defect InP(001) Surface by Low Energy Ion Scаttering Spectroscopy

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