Thomaz, R. ; Louette, P. ; Hoff, G. ; Müller, S. ; Pireaux, J. J. ; Trautmann, C. ; Papaléo, R. M. (2018)
Bond-breaking efficiency of high-energy ions in ultrathin polymer films.
In: Physical Review Letters, 121 (6)
doi: 10.1103/PhysRevLett.121.066101
Artikel, Bibliographie
Kurzbeschreibung (Abstract)
Thin films of poly(methyl methacrylate) and poly(vinyl chloride) of different thickness are used to investigate the effect of spatial confinement on the efficiency of bond breaking induced by 2 MeV H+ and 2.1 GeV Bi ions. Effective cross sections for oxygen and chlorine loss are extracted for films down to a thickness of about 5 nm and are compared to theoretical estimations based on radial energy density profiles simulated with GEANT-DNA. The cross sections are to a large extent thickness independent, indicating that bond breaking is dominated by short-range processes. This is in contrast to the strongly reduced efficiencies found recently for cratering induced by high-energy ions in similar ultrathin polymer films [Phys. Rev. Lett. 114, 118302 (2015)].
| Typ des Eintrags: | Artikel |
|---|---|
| Erschienen: | 2018 |
| Autor(en): | Thomaz, R. ; Louette, P. ; Hoff, G. ; Müller, S. ; Pireaux, J. J. ; Trautmann, C. ; Papaléo, R. M. |
| Art des Eintrags: | Bibliographie |
| Titel: | Bond-breaking efficiency of high-energy ions in ultrathin polymer films |
| Sprache: | Englisch |
| Publikationsjahr: | 6 August 2018 |
| Verlag: | American Physical Society |
| Titel der Zeitschrift, Zeitung oder Schriftenreihe: | Physical Review Letters |
| Jahrgang/Volume einer Zeitschrift: | 121 |
| (Heft-)Nummer: | 6 |
| DOI: | 10.1103/PhysRevLett.121.066101 |
| Kurzbeschreibung (Abstract): | Thin films of poly(methyl methacrylate) and poly(vinyl chloride) of different thickness are used to investigate the effect of spatial confinement on the efficiency of bond breaking induced by 2 MeV H+ and 2.1 GeV Bi ions. Effective cross sections for oxygen and chlorine loss are extracted for films down to a thickness of about 5 nm and are compared to theoretical estimations based on radial energy density profiles simulated with GEANT-DNA. The cross sections are to a large extent thickness independent, indicating that bond breaking is dominated by short-range processes. This is in contrast to the strongly reduced efficiencies found recently for cratering induced by high-energy ions in similar ultrathin polymer films [Phys. Rev. Lett. 114, 118302 (2015)]. |
| Zusätzliche Informationen: | Artikel-ID: 066101 |
| Fachbereich(e)/-gebiet(e): | 11 Fachbereich Material- und Geowissenschaften 11 Fachbereich Material- und Geowissenschaften > Materialwissenschaft 11 Fachbereich Material- und Geowissenschaften > Materialwissenschaft > Fachgebiet Ionenstrahlmodifizierte Materialien |
| Hinterlegungsdatum: | 29 Feb 2024 11:30 |
| Letzte Änderung: | 29 Feb 2024 11:30 |
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