Enhancing laser-driven proton acceleration by using micro-pillar arrays at high drive energy - Archive ouverte HAL
Article Dans Une Revue Scientific Reports Année : 2017

Enhancing laser-driven proton acceleration by using micro-pillar arrays at high drive energy

Dimitri Khaghani
  • Fonction : Auteur
Björn Borm
  • Fonction : Auteur
Loïc Burr
  • Fonction : Auteur
Felix Gärtner
  • Fonction : Auteur
Liana Movsesyan
  • Fonction : Auteur
Olga Rosmej
  • Fonction : Auteur
Maria Eugenia Toimil-Molares
  • Fonction : Auteur
Florian Wagner
  • Fonction : Auteur
Paul Neumayer
  • Fonction : Auteur

Résumé

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 ~10$^{17–18}$ W/cm$^{2}$. 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.

Dates et versions

hal-01645782 , version 1 (23-11-2017)

Identifiants

Citer

Dimitri Khaghani, Mathieu Lobet, Björn Borm, Loïc Burr, Felix Gärtner, et al.. Enhancing laser-driven proton acceleration by using micro-pillar arrays at high drive energy. Scientific Reports, 2017, 7 (1), pp.11366. ⟨10.1038/s41598-017-11589-z⟩. ⟨hal-01645782⟩

Collections

CEA CNRS DAM
376 Consultations
0 Téléchargements

Altmetric

Partager

More