Graphical user interface for SDTrimSP to simulate sputtering, ion implantation and the dynamic effects of ion irradiation

Szabo, Paul Stefan; Weichselbaum, David; Biber, Herbert; Cupak, C.; Mutzke, A.; Wilhelm, R.; Aumayr, F.

doi:10.1016/j.nimb.2022.04.008

Cited by 24 publications

(14 citation statements)

References 39 publications

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“…The adaptation consists of increasing the surface binding energy of oxygen bound in the oxides to 6.5 eV, using the surface binding model with parameter isbv = 2 and changing the density to match literature values of the minerals. SDTrimSP simulations were performed with those parameters, evaluating sputter yields for the ion/material combinations presented in this study using the graphical user interface (GUI) companion program, which allows for a fast setup of complex simulation settings in SDTrimSP (Szabo et al 2022b). Figure 5 shows the sputter yield as calculated with SDTrimSP for 2 keV Ar + (left) and 4 keV He + (right) impacting on atomically flat enstatite (MgSiO 3 ) with a density of ρ = 3.3 g cm −3 (Bladh et al 2001).…”

Section: Discussion and Modelingmentioning

confidence: 99%

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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Section: Discussion and Modelingmentioning

confidence: 99%

Sputtering Behavior of Rough, Polycrystalline Mercury Analogs

et al. 2022

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“…Simulations were performed using SDTrimSP‐3D version 1.15, some simulations with flat surfaces were also performed with SDTrimSP 6.01, together with the graphical user interface described by Szabo et al. (2022c), for cross‐checking purposes.…”

Section: Sdtrimsp‐3d For Solar Wind‐regolith Interactionmentioning

confidence: 99%

“…Licenses of SDTrimSP and SDTrimSP‐3D can be acquired by contacting mailto:sdtrimsp@ipp.mpg.de or the Max‐Planck‐Innovation GmbH. The SDTrimSP graphical user interface is available on github (Szabo et al., 2022d).…”

Section: Data Availability Statementmentioning

confidence: 99%

“…All regolith grains in our simulations are made up of enstatite MgSiO 3 with a density of 3.3 g/cm 3 . Simulations were performed using SDTrimSP-3D version 1.15, some simulations with flat surfaces were also performed with SDTrimSP 6.01, together with the graphical user interface described by Szabo et al (2022c), for cross-checking purposes. SDTrimSP-3D does not track the charge state of incoming and outgoing projectiles as it lacks the physical capability of simulating the neutralization process.…”

Section: Sdtrimsp-3d For Solar Wind-regolith Interactionmentioning

confidence: 99%

“…mpg.de or the Max-Planck-Innovation GmbH. The SDTrimSP graphical user interface is available on github (Szabo et al, 2022d). Vorburger, A., Wurz, P., Barabash, S., Wieser, M., Futaana, Y., Bhardwaj, A., & Asamura, K. (2015).…”

Section: Data Availability Statementmentioning

confidence: 99%

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Energetic Neutral Atom (ENA) Emission Characteristics at the Moon and Mercury From 3D Regolith Simulations of Solar Wind Reflection

Szabo,

Poppe,

Mutzke

et al. 2023

JGR Planets

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The reflection of solar wind protons as energetic neutral atoms (ENAs) from the lunar surface has regularly been used to study the plasma‐surface interaction at the Moon. However, there still exists a fundamental lack of knowledge of the scattering process. ENA emission from the surface is expected to similarly occur at Mercury and will be studied by BepiColombo. Understanding this solar wind backscattering will allow studies of both Mercury’s plasma environment as well as properties of the hermean surface itself. Here, we expand on previous simulation studies of the solar‐wind‐regolith interaction with 3D grains in SDTrimSP‐3D to compare the predicted scattering energies and angles to ENA measurements from the Moon by the Chandrayaan‐1 and IBEX missions. The simulations reproduce a backward emission towards the Sun, which can be connected to the geometry of the regolith grain stacking. In contrast, the ENA energy distribution and its Maxwellian shape is mostly connected to the solar wind velocity. Our simulations also correctly describe a lunar ENA albedo between 10% and 20% and support its decrease with solar wind velocity. We further expand our studies to illustrate how BepiColombo will be able to observe ENAs at Mercury using hybrid simulations of Mercury’s magnetosphere as an input for the complex surface precipitation patterns. We demonstrate that the variable ion precipitation will directly influence ENA emission from the surface. The orbits of BepiColombo’s MPO and MMO/Mio spacecraft are shown to be suitable to observe ENA emission patterns both on a local and a global scale.

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