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Enhancement of laser-driven ion acceleration in non-periodic nanostructured targets

Ferri, J. ; Thiele, I. ; Siminos, E. ; Gremillet, L. ; Smetanina, E. ; Dmitriev, A. ; Cantono, G. LU orcid ; Wahlström, C. G. LU and Fülöp, T. (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
; ; ; ; ; ; ; and
organization
publishing date
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
2025-10-14 12:26:41
@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}},
}