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On the Dynamics of Transient Plasmas Generated by Nanosecond Laser Ablation of Several Metals

The dynamics of transient plasma generated by UV ns-laser ablation of selected metals (Co, Cu, Ag, Bi) were investigated by the Langmuir Probe method in angle- and time-resolved modes. Multiple ionic and electronic structures were seen for all plasmas with some corresponding to anions or nanoparticl...

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Autores principales: Irimiciuc, Stefan Andrei, Chertopalov, Sergii, Novotný, Michal, Craciun, Valentin, Lancok, Jan
Formato: Online Artículo Texto
Lenguaje:English
Publicado: MDPI 2021
Materias:
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC8658669/
https://www.ncbi.nlm.nih.gov/pubmed/34885492
http://dx.doi.org/10.3390/ma14237336
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author Irimiciuc, Stefan Andrei
Chertopalov, Sergii
Novotný, Michal
Craciun, Valentin
Lancok, Jan
author_facet Irimiciuc, Stefan Andrei
Chertopalov, Sergii
Novotný, Michal
Craciun, Valentin
Lancok, Jan
author_sort Irimiciuc, Stefan Andrei
collection PubMed
description The dynamics of transient plasma generated by UV ns-laser ablation of selected metals (Co, Cu, Ag, Bi) were investigated by the Langmuir Probe method in angle- and time-resolved modes. Multiple ionic and electronic structures were seen for all plasmas with some corresponding to anions or nanoparticle-dominated structures. The addition of an Ar atmosphere energetically confined the plasma and increased the charge density by several orders of magnitude. For pressure ranges exceeding 0.5 Pa fast ions were generated in the plasma as a result of Ar ionization and acceleration in the double layer defining the front of the plasma plume. Several correlations between the target nature plasma properties were attempted. The individual plasma structure expansion velocity increases with the melting point and decreases with the atomic mass while the corresponding charged particle densities decrease with the melting point, evidencing the relationship between the volatility of the sample and the overall abated mass.
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spelling pubmed-86586692021-12-10 On the Dynamics of Transient Plasmas Generated by Nanosecond Laser Ablation of Several Metals Irimiciuc, Stefan Andrei Chertopalov, Sergii Novotný, Michal Craciun, Valentin Lancok, Jan Materials (Basel) Article The dynamics of transient plasma generated by UV ns-laser ablation of selected metals (Co, Cu, Ag, Bi) were investigated by the Langmuir Probe method in angle- and time-resolved modes. Multiple ionic and electronic structures were seen for all plasmas with some corresponding to anions or nanoparticle-dominated structures. The addition of an Ar atmosphere energetically confined the plasma and increased the charge density by several orders of magnitude. For pressure ranges exceeding 0.5 Pa fast ions were generated in the plasma as a result of Ar ionization and acceleration in the double layer defining the front of the plasma plume. Several correlations between the target nature plasma properties were attempted. The individual plasma structure expansion velocity increases with the melting point and decreases with the atomic mass while the corresponding charged particle densities decrease with the melting point, evidencing the relationship between the volatility of the sample and the overall abated mass. MDPI 2021-11-30 /pmc/articles/PMC8658669/ /pubmed/34885492 http://dx.doi.org/10.3390/ma14237336 Text en © 2021 by the authors. https://creativecommons.org/licenses/by/4.0/Licensee MDPI, Basel, Switzerland. This article is an open access article distributed under the terms and conditions of the Creative Commons Attribution (CC BY) license (https://creativecommons.org/licenses/by/4.0/).
spellingShingle Article
Irimiciuc, Stefan Andrei
Chertopalov, Sergii
Novotný, Michal
Craciun, Valentin
Lancok, Jan
On the Dynamics of Transient Plasmas Generated by Nanosecond Laser Ablation of Several Metals
title On the Dynamics of Transient Plasmas Generated by Nanosecond Laser Ablation of Several Metals
title_full On the Dynamics of Transient Plasmas Generated by Nanosecond Laser Ablation of Several Metals
title_fullStr On the Dynamics of Transient Plasmas Generated by Nanosecond Laser Ablation of Several Metals
title_full_unstemmed On the Dynamics of Transient Plasmas Generated by Nanosecond Laser Ablation of Several Metals
title_short On the Dynamics of Transient Plasmas Generated by Nanosecond Laser Ablation of Several Metals
title_sort on the dynamics of transient plasmas generated by nanosecond laser ablation of several metals
topic Article
url https://www.ncbi.nlm.nih.gov/pmc/articles/PMC8658669/
https://www.ncbi.nlm.nih.gov/pubmed/34885492
http://dx.doi.org/10.3390/ma14237336
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