Khaghani, Dimitri ; Lobet, Mathieu ; Borm, Björn ; Burr, Loïc ; Gärtner, Felix ; Gremillet, Laurent ; Movsesyan, Liana ; Rosmej, Olga ; Toimil-Molares, Maria Eugenia ; Wagner, Florian ; Neumayer, Paul (2017)
Enhancing laser-driven proton acceleration by using micro-pillar arrays at high drive energy.
In: Scientific Reports, 7 (1)
doi: 10.1038/s41598-017-11589-z
Artikel, Bibliographie
Kurzbeschreibung (Abstract)
The interaction of micro- and nano-structured target surfaces with high-power laser pulses is being widely investigated for its unprecedented absorption efficiency. We have developed vertically aligned metallic micro-pillar arrays for laser-driven proton acceleration experiments. We demonstrate that such targets help strengthen interaction mechanisms when irradiated with high-energy-class laser pulses of intensities ~1017–18 W/cm2. In comparison with standard planar targets, we witness strongly enhanced hot-electron production and proton acceleration both in terms of maximum energies and particle numbers. Supporting our experimental results, two-dimensional particle-in-cell simulations show an increase in laser energy conversion into hot electrons, leading to stronger acceleration fields. This opens a window of opportunity for further improvements of laser-driven ion acceleration systems.
| Typ des Eintrags: | Artikel |
|---|---|
| Erschienen: | 2017 |
| Autor(en): | Khaghani, Dimitri ; Lobet, Mathieu ; Borm, Björn ; Burr, Loïc ; Gärtner, Felix ; Gremillet, Laurent ; Movsesyan, Liana ; Rosmej, Olga ; Toimil-Molares, Maria Eugenia ; Wagner, Florian ; Neumayer, Paul |
| Art des Eintrags: | Bibliographie |
| Titel: | Enhancing laser-driven proton acceleration by using micro-pillar arrays at high drive energy |
| Sprache: | Englisch |
| Publikationsjahr: | 2017 |
| Verlag: | Nature |
| Titel der Zeitschrift, Zeitung oder Schriftenreihe: | Scientific Reports |
| Jahrgang/Volume einer Zeitschrift: | 7 |
| (Heft-)Nummer: | 1 |
| DOI: | 10.1038/s41598-017-11589-z |
| URL / URN: | https://doi.org/10.1038/s41598-017-11589-z |
| Kurzbeschreibung (Abstract): | The interaction of micro- and nano-structured target surfaces with high-power laser pulses is being widely investigated for its unprecedented absorption efficiency. We have developed vertically aligned metallic micro-pillar arrays for laser-driven proton acceleration experiments. We demonstrate that such targets help strengthen interaction mechanisms when irradiated with high-energy-class laser pulses of intensities ~1017–18 W/cm2. In comparison with standard planar targets, we witness strongly enhanced hot-electron production and proton acceleration both in terms of maximum energies and particle numbers. Supporting our experimental results, two-dimensional particle-in-cell simulations show an increase in laser energy conversion into hot electrons, leading to stronger acceleration fields. This opens a window of opportunity for further improvements of laser-driven ion acceleration systems. |
| Fachbereich(e)/-gebiet(e): | 11 Fachbereich Material- und Geowissenschaften > Materialwissenschaft > Fachgebiet Ionenstrahlmodifizierte Materialien 11 Fachbereich Material- und Geowissenschaften > Materialwissenschaft 11 Fachbereich Material- und Geowissenschaften |
| Hinterlegungsdatum: | 29 Dez 2017 12:02 |
| Letzte Änderung: | 29 Dez 2017 12:02 |
| PPN: | |
| Sponsoren: | We acknowledge PRACE for awarding us access to TGCC/Curie (Grant No. 2014112576). |
| Export: | |
| Suche nach Titel in: | TUfind oder in Google |
 |
Frage zum Eintrag |
Optionen (nur für Redakteure)
 |
Redaktionelle Details anzeigen |
Drucken
Impressum