Sputtering measurements using a quartz crystal microbalance as a catcher

Berger, Bernhard M.; Szabo, Paul Stefan; Stadlmayr, R.; Aumayr, F.

doi:10.1016/j.nimb.2016.11.039

Cited by 8 publications

(4 citation statements)

References 22 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…QCM targets are limited in this aspect because they only allow the investigation of thin films. Therefore, using the catcher-QCM setup at TU Wien that allows to collect the sputtered material from a more realistic target (Berger et al, 2017), as well as using the enhanced versions SDTrimSP-2D and SDTrimSP-3D (Mutzke et al, 2013;von Toussaint et al, 2017) will add more insight into the influence of surface roughness for solar wind sputtering.…”

Section: Discussionmentioning

confidence: 99%

“…There scanning plates are used to create a uniform beam profile across the QCM target, which is necessary for the Sauerbrey equation (1) to hold. Additionally, an aperture that is mounted directly in front of the sample is used to control the shape of the scanned ion beam allowing circular shapes with diameters between 2 and 7 mm (Berger et al, 2017). Typical Ar fluxes of 10 12 atoms cm -2 s -1 and H fluxes of 10 13 atoms cm -2 s -1 were achieved for uniform scanning of the targets.…”

Section: Methodsmentioning

confidence: 99%

See 1 more Smart Citation

Solar wind sputtering of wollastonite as a lunar analogue material – Comparisons between experiments and simulations

Szabo

Chiba

Biber

et al. 2018

Icarus

Self Cite

View full text Add to dashboard Cite

The sputtering of wollastonite (CaSiO3) by solar wind-relevant ions has been investigated experimentally and the results are compared to the binary collision approximation (BCA) codes SDTrimSP and SRIM-2013. Absolute sputtering yields are presented for Ar projectiles as a function of ion impact energy, charge state and impact angle as well as for solar wind H projectiles as a function of impact angle. Erosion of wollastonite by singly charged Ar ions is dominated by kinetic sputtering. The absolute magnitude of the sputtering yield and its dependence on the projectile impact angle can be well described by SDTrimSP as long as the actual sample composition is used in the simulation. SRIM-2013 largely overestimates the yield especially at glancing impact angles. For higher Ar charge states, the measured yield is strongly enhanced due to potential sputtering. Sputtering yields under solar wind-relevant H + bombardment are smaller by two orders of magnitude compared to Ar. Our experimental yields also show a less pronounced angular dependence than predicted by both BCA programs, probably due to H implantation in the sample. Based on our experimental findings and extrapolations to other solar wind ions by using SDTrimSP we present a model for the complete solar wind sputtering of a flat wollastonite surface as a function of projectile ion impact angle, which predicts a sputtering yield of 1.29 atomic mass units per solar wind ion for normal impact. We find that mostly He and some heavier ions increase the sputtering yield by more than a factor of two as compared to H + bombardment only.

show abstract

Section: Discussionmentioning

confidence: 99%

Section: Methodsmentioning

confidence: 99%

Solar wind sputtering of wollastonite as a lunar analogue material – Comparisons between experiments and simulations

Szabo

Chiba

Biber

et al. 2018

Icarus

Self Cite

View full text Add to dashboard Cite

show abstract

“…This did not apply to our ion sputtering experiments because most ejecta were water molecules at the given ice temperatures (see Section 2). For metal or silicate targets that require no cooling (Berger et al, 2017), the approach with a secondary microbalance is easier to implement.…”

Section: The Correlation Of Chamber Pressure With Sputtering Yieldmentioning

confidence: 99%

Sputtering of water ice films: A re-assessment with singly and doubly charged oxygen and argon ions, molecular oxygen, and electrons

Galli

Vorburger

Würz

et al. 2017

Icarus

View full text Add to dashboard Cite

We studied the erosion rates from thin water ice films on a microbalance upon irradiation with ions (O + , O + 2 , O 2+ , Ar + , and Ar 2+) and electrons at energies between 0.1 keV and 80 keV. The results with O + and Ar + irradiation confirm previous results of other research groups that relied on the same experiment setup. In addition, we assessed how the ice film thickness affects the results and we compared the results for singly versus doubly charged ions and for O + versus O + 2 ions. The irradiation with 1 keV and 3 keV electrons offer the first experimental results at these energies. Our results confirm theoretical predictions that the yield per impacting electron does not increase with energy ad infinitum but rather levels off between 0.1 and 1 keV. The results for ion and electron sputtering have important implications for atmosphere-less icy bodies in a plasma environment. We briefly discuss the implications for the icy moons of Jupiter. Finally, the experiments also allow us to assess the viability of two methods to measure the erosion rate in the case that the icy sample cannot be attached on a microbalance. This is an important step for future laboratory studies where regolith ice samples and their reaction to particle irradiation are to be characterized.

show abstract

“…For the investigation of bulk samples such as mineral pellets, a QCM can also be used in a catcher configuration, where it is placed next to the irradiated sample. Then the mass increase by sputtered atoms sticking to the catcher QCM can be measured (Berger et al, 2017). Such a setup can also give insights into the angular distribution of sputtered particles (see Li et al [2017] for measurements with structured molybdenum surfaces, and Stadlmayr et al [2020] for experiments with highly porous tungsten fuzz structures).…”

Section: Quartz Crystal Microbalance Samplesmentioning

confidence: 99%

Experimental Insights Into Space Weathering of Phobos: Laboratory Investigation of Sputtering by Atomic and Molecular Planetary Ions

et al. 2020

View full text Add to dashboard Cite

Key Points: • Experiments with Phobos analogs were carried out to evaluate the sputtering by O + , C + , O2 + and CO2 + ions from the Martian atmosphere. • The sputter yield from O ions is lower than previously assumed and no yield increases due to molecular effects were observed. • Previous predictions that planetary O ions will dominate sputtering in the Martian tail region are supported by the measurements presented.

show abstract

Sputtering measurements using a quartz crystal microbalance as a catcher

Cited by 8 publications

References 22 publications

Solar wind sputtering of wollastonite as a lunar analogue material – Comparisons between experiments and simulations

Solar wind sputtering of wollastonite as a lunar analogue material – Comparisons between experiments and simulations

Sputtering of water ice films: A re-assessment with singly and doubly charged oxygen and argon ions, molecular oxygen, and electrons

Experimental Insights Into Space Weathering of Phobos: Laboratory Investigation of Sputtering by Atomic and Molecular Planetary Ions

Contact Info

Product

Resources

About