Sputtering of nanostructured tungsten and comparison to modelling with TRI3DYN

Stadlmayr, R.; Szabo, Paul Stefan; Mayer, Daniel; Cupak, C.; Dittmar, T.; Bischoff, L.; Möller, S.; Rasiński, M.; Wilhelm, R.; Möller, W.; Aumayr, F.

doi:10.1016/j.jnucmat.2020.152019

Cited by 26 publications

(14 citation statements)

References 24 publications

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“…Other prominent examples are numeric codes like TRI3DYN or SDTrimSP-3D, which employ the binary collision approximation (BCA) 49,50 . These codes have been successfully applied in studies focusing on sputtering-induced morphology effects and achieved results consistent with experimental data [51][52][53][54][55] . While these codes already allow to simulate topographies extending beyond 100 nm lateral size, consideration of larger surface inputs is still limited by computational resources.…”

Section: Introductionsupporting

confidence: 52%

Comparative study regarding the sputtering yield of nanocolumnar tungsten surfaces under Ar+ irradiation

Lopez-Cazalilla

Cupak

Fellinger

et al. 2022

Phys. Rev. Materials

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Section: Introductionsupporting

confidence: 52%

Comparative study regarding the sputtering yield of nanocolumnar tungsten surfaces under Ar+ irradiation

Lopez-Cazalilla

Cupak

Fellinger

et al. 2022

Phys. Rev. Materials

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“…By moving the catching QCM (catcher) in a circular arc around the sample, additionally the angular distribution of the ejected material can be probed. This method has already shown its capabilities in different experiments with metal samples (Berger et al 2017;Stadlmayr et al 2020b;Cupak et al 2021). In these cases, the irradiated samples and the coating on the catcher were exactly the same material.…”

Section: Methodsmentioning

confidence: 98%

Sputtering Behavior of Rough, Polycrystalline Mercury Analogs

et al. 2022

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The solar wind continuously impacts on rocky bodies in space, eroding their surface, thereby contributing significantly to the exosphere formations. The BepiColombo mission to Mercury will investigate the Hermean exosphere, which makes an understanding of the precise formation processes crucial for evaluation of the acquired data. We therefore developed an experimental setup with two microbalances that allows us to compare the sputter behavior of deposited thin solid layers with that of real mineral samples in the form of pressed powder. In addition, this technique is used to study the angular distribution of the sputtered particles. Using 4 keV He+ and 2 keV Ar+ ions, the sputter behavior of pellets of the minerals enstatite (MgSiO3) and wollastonite (CaSiO3) is studied, because these minerals represent analogs for the surface of the planet Mercury or the Moon. Pellets of powdered enstatite show significantly lower sputter yields than thin amorphous enstatite films prepared by pulsed laser deposition. 3D simulations of sputtering based on surface topography data from atomic force microscopy show that the observed reduction can be explained by the much rougher pellet surface alone. We therefore conclude that sputter yields from amorphous thin films can be applied to surfaces of celestial bodies exposed to ion irradiation, provided the effects of surface roughness, as encountered in realistic materials in space, are adequately accounted for. This also implies that taking surface roughness into account is important for modeling of the interaction of the solar wind with the surface of Mercury.

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“…According to this technique, the composition's dynamical change along a line perpendicular to the surface can be predicted, where sputtering, defect migrations, re-deposition of the recoiled atoms, and distribution of the implanted ions with other parameters are taken into account. 46 TRIM simulations are one of the most important techniques to understand the ion–solid interaction through the available SRIM package, which shows the relative outcome of the amorphous materials and the sputtering after the interaction. The main drawback of such TRIM simulations are that the simulations are performed under a static condition, so it is not possible to consider ion implantation, sputtering, and collision relocation of the atom during high-fluence modification.…”

Section: Methodsmentioning

confidence: 99%