On the missing single collision peak in low energy heavy ion scattering

Wilhelm, R.A.; Deuzeman, M.J.; Rai, S.; Husinsky, W.; Szabo, P.S.; Biber, H.; Stadlmayr, R.; Cupak, C.; Hundsbichler, J.; Lemell, C.; Möller, W.; Mutzke, A.; Hobler, G.; Versolato, O.O.; Aumayr, F.; Hoekstra, R.

doi:10.1016/j.nimb.2023.165123

Cited by 4 publications

(1 citation statement)

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“…It is in question whether or not the forward-facing peak is a modeling artifact. For example, Wilhelm et al (2023) showed an absence of the characteristic, forward-facing single collision peak in experimental data of 14 keV Sn + backscattered from a Mo surface. If the single collision peak is a simulation artifact, the residuals of the fit shown in Figure 1 for grazing incidence angles would be significantly reduced.…”

Section: Resultsmentioning

confidence: 99%

SpuBase: Solar Wind Ion Sputter Database for Modeling Purposes

Jäggi,

Biber,

Brötzner

et al. 2024

Planet. Sci. J.

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We supply the modelers with a database, SpuBase (doi:10.5281/zenodo.10783295), that is based on the latest approach for obtaining solar wind ion sputter yields in agreement with experimental sputter data outlined in Jäggi et al. We include an overview of sputter results for typical Lunar and Hermean surfaces. To obtain total sputter yields for any given surface, we perform a mass balance of individual mineral sputter yields. For a set of impact angles, the angular and energy distribution data are scaled according to the sputter yield, summed up and fitted to obtain one probability distribution for each chemical element involved. Comparison of the results from different geochemical terranes on the Moon and Mercury has shown that variations in the abundance of silicates result in comparable energy and angular distribution data owing to the underlying model assumptions. The inclusion of sulfides relevant for Mercury, however, significantly affects the energy and angular distributions of sputtered particles. The application of the damage-driven sulfur diffusion rate in FeS in all sulfur-bearing minerals results in 35 times lower sulfur yields on average and a less prominent forward sputtering of sulfur at grazing incidence angles.

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Section: Resultsmentioning

confidence: 99%