Enhancement of laser-driven ion acceleration in non-periodic nanostructured targets
(2020) In Journal of Plasma Physics 86(1).- Abstract
Using particle-in-cell simulations, we demonstrate an improvement of the target-normal-sheath acceleration (TNSA) of protons in non-periodically nanostructured targets with micron-scale thickness. Compared to standard flat foils, an increase in the proton cutoff energy by up to a factor of two is observed in foils coated with nanocones or perforated with nanoholes. The latter nano-perforated foils yield the highest enhancement, which we show to be robust over a broad range of foil thicknesses and hole diameters. The improvement of TNSA performance results from more efficient hot-electron generation, caused by a more complex laser-electron interaction geometry and increased effective interaction area and duration. We show that TNSA is... (More)
Using particle-in-cell simulations, we demonstrate an improvement of the target-normal-sheath acceleration (TNSA) of protons in non-periodically nanostructured targets with micron-scale thickness. Compared to standard flat foils, an increase in the proton cutoff energy by up to a factor of two is observed in foils coated with nanocones or perforated with nanoholes. The latter nano-perforated foils yield the highest enhancement, which we show to be robust over a broad range of foil thicknesses and hole diameters. The improvement of TNSA performance results from more efficient hot-electron generation, caused by a more complex laser-electron interaction geometry and increased effective interaction area and duration. We show that TNSA is optimized for a nanohole distribution of relatively low areal density and that is not required to be periodic, thus relaxing the manufacturing constraints.
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- author
- Ferri, J. ; Thiele, I. ; Siminos, E. ; Gremillet, L. ; Smetanina, E. ; Dmitriev, A. ; Cantono, G. LU ; Wahlström, C. G. LU and Fülöp, T.
- organization
- publishing date
- 2020-02
- type
- Contribution to journal
- publication status
- published
- subject
- keywords
- intense particle beams, plasma simulation
- in
- Journal of Plasma Physics
- volume
- 86
- issue
- 1
- article number
- 905860101
- publisher
- Cambridge University Press
- external identifiers
-
- scopus:85078317271
- ISSN
- 0022-3778
- DOI
- 10.1017/S0022377819000898
- language
- English
- LU publication?
- yes
- id
- 9b66180a-8706-44f8-8b6d-ed045870dd43
- date added to LUP
- 2020-02-07 13:42:35
- date last changed
- 2022-04-18 20:21:05
@article{9b66180a-8706-44f8-8b6d-ed045870dd43, abstract = {{<p>Using particle-in-cell simulations, we demonstrate an improvement of the target-normal-sheath acceleration (TNSA) of protons in non-periodically nanostructured targets with micron-scale thickness. Compared to standard flat foils, an increase in the proton cutoff energy by up to a factor of two is observed in foils coated with nanocones or perforated with nanoholes. The latter nano-perforated foils yield the highest enhancement, which we show to be robust over a broad range of foil thicknesses and hole diameters. The improvement of TNSA performance results from more efficient hot-electron generation, caused by a more complex laser-electron interaction geometry and increased effective interaction area and duration. We show that TNSA is optimized for a nanohole distribution of relatively low areal density and that is not required to be periodic, thus relaxing the manufacturing constraints.</p>}}, author = {{Ferri, J. and Thiele, I. and Siminos, E. and Gremillet, L. and Smetanina, E. and Dmitriev, A. and Cantono, G. and Wahlström, C. G. and Fülöp, T.}}, issn = {{0022-3778}}, keywords = {{intense particle beams; plasma simulation}}, language = {{eng}}, number = {{1}}, publisher = {{Cambridge University Press}}, series = {{Journal of Plasma Physics}}, title = {{Enhancement of laser-driven ion acceleration in non-periodic nanostructured targets}}, url = {{http://dx.doi.org/10.1017/S0022377819000898}}, doi = {{10.1017/S0022377819000898}}, volume = {{86}}, year = {{2020}}, }