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Open AccessArticle

Impact Features Induced by Single Fast Ions of Different Charge-State on Muscovite Mica

1
Departamento de Física, Universidade Federal de Santa Catarina (UFSC), Florianópolis CEP 88040-900, Santa Catarina, Brazil
2
Escola Politécnica, Pontifícia Universidade Católica do Rio Grande do Sul (PUCRS), Porto Alegre CEP 90619-900, Rio Grande do Sul, Brazil
3
Instituto de Física, Universidade Federal do Rio Grande do Sul (UFRGS), Porto Alegre CEP 91501-970, Rio Grande do Sul, Brazil
*
Author to whom correspondence should be addressed.
Received: 12 January 2021 / Revised: 15 February 2021 / Accepted: 19 February 2021 / Published: 25 February 2021
(This article belongs to the Special Issue Charge-State Evolution in Ion-Atom/Solid Collisions)
The influence of the charge state q on surface modifications induced by the impact of individual fast, heavy ions on muscovite mica was investigated. Beams of 593 MeV 197Auq+ with well-defined initial charge states over a relatively broad range of values (30 to 51) and at different irradiation geometries were used. At normal incidence, the impact features are rounded protrusions (hillocks) with ≳20 nm in diameter. At grazing angles, besides the hillocks, craters and elongated tails (up to 350 nm-long) extending along the direction of ion penetration are produced. It is shown that the impact features at normal incidence depend strongly on the initial charge state of the projectiles. This dependence is very weak at grazing angles as the ion reaches the equilibrium charge state closer to the surface. At normal ion incidence, the hillock volume scales with q3.3 ± 0.6. This dependence stems largely from the increase in the hillock height, as a weak dependence of the diameter was observed. View Full-Text
Keywords: ion track; surface modification; single ion impact; charge state; mica; electronic stopping power; scanning force microscopy ion track; surface modification; single ion impact; charge state; mica; electronic stopping power; scanning force microscopy
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MDPI and ACS Style

Alencar, I.; Silva, M.R.; Leal, R.; Grande, P.L.; Papaléo, R.M. Impact Features Induced by Single Fast Ions of Different Charge-State on Muscovite Mica. Atoms 2021, 9, 17. https://0-doi-org.brum.beds.ac.uk/10.3390/atoms9010017

AMA Style

Alencar I, Silva MR, Leal R, Grande PL, Papaléo RM. Impact Features Induced by Single Fast Ions of Different Charge-State on Muscovite Mica. Atoms. 2021; 9(1):17. https://0-doi-org.brum.beds.ac.uk/10.3390/atoms9010017

Chicago/Turabian Style

Alencar, Igor; Silva, Marcos R.; Leal, Rafael; Grande, Pedro L.; Papaléo, Ricardo M. 2021. "Impact Features Induced by Single Fast Ions of Different Charge-State on Muscovite Mica" Atoms 9, no. 1: 17. https://0-doi-org.brum.beds.ac.uk/10.3390/atoms9010017

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